| Autism Autism is a brain development disorder characterized by impaired social interaction and communication, and by restricted and repetitive behavior. These signs all begin before a child is three years old. Autism
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| Algeria Algeria
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| Apollo In Greek and Roman mythology, Apollo (in Greek, Ἀπόλλων—Apóllōn or Ἀπέλλων—Apellōn), is one of the most important and many-sided of the Olympian deities. The ideal of the kouros (a beardless youth), Apollo has been variously recognized as a god of light and the sun; truth and prophecy; archery; medicine and healing; music, poetry, and the arts; and more. Apollo
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| Afro-Asiatic languages The Afro-Asiatic languages constitute a language family with about 375 living languages (SIL estimate) and more than 350 million speakers spread throughout North Africa, the Horn of Africa, and Southwest Asia, as well as parts of the Sahel, West Africa and East Africa. Arabic is the most widespread Afro-Asiatic language with over 280 million native speakers. Afro-Asiatic also includes several ancient languages, such as Ancient Egyptian, Biblical Hebrew, and Akkadian. Afro-Asiatic_languages
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| Asphalt Asphalt () is a sticky, black and highly viscous liquid or semi-solid that is present in most crude petroleums and in some natural deposits sometimes termed asphaltum. It is most commonly modelled as a colloid, with asphaltenes as the dispersed phase and maltenes as the continuous phase (though there is some disagreement amongst chemists regarding its structure). Asphalt
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| Azerbaijan Azerbaijan
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| Abortion An abortion is the termination of a pregnancy by the removal or expulsion from the uterus of a fetus/embryo, resulting in or caused by its death. An abortion can occur spontaneously due to complications during pregnancy or can be induced, in humans and other species. Abortion
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| Algorithm In mathematics, computing, linguistics, and related subjects, an algorithm is a finite sequence of instructions, an explicit, step-by-step procedure for solving a problem, often used for calculation and data processing. It is formally a type of effective method in which a list of well-defined instructions for completing a task, will when given an initial state, proceed through a well-defined series of successive states, eventually terminating in an end-state. Algorithm
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| Alexander the Great Alexander the Great ( or , Mégas Aléxandros; 356 BC – 323 BC), also known as Alexander III of Macedon () was an ancient Greek King (basileus) of Macedon (336–323 BC). He was one of the most successful military commanders of all time and is presumed undefeated in battle. By the time of his death, he had conquered the Achaemenid Persian Empire, adding it to Macedon's European territories; according to some modern writers, this was most of the world as known to the ancient Greeks. Alexander_the_Great
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| Ankara Ankara is the capital of Turkey and the country's second largest city after Istanbul. The city has a mean elevation of 850 m (2800 ft), and as of 2007 the city had a population of 4,751,360, which includes eight districts under the city's administration. Ankara
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| Ancient Egypt Ancient Egypt was an ancient civilization in eastern North Africa, concentrated along the lower reaches of the Nile River in what is now the modern nation of Egypt. The civilization began around 3150Upper and Lower Egypt under the first pharaoh, and it developed over the next three millennia. Ancient_Egypt
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| Atom Atom
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| Applied ethics Applied ethics is, in the words of Brenda Almond, co-founder of the Society for Applied Philosophy, "the philosophical examination, from a moral standpoint, of particular issues in private and public life that are matters of moral judgment". It is thus a term used to describe attempts to use philosophical methods to identify the morally correct course of action in various fields of human life. Applied_ethics
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| Anaximander Anaximander (Ancient Greek:''pre-Socratic Greek philosopher who lived in Miletus, a city of Ionia. He belonged to the Milesian school and learned the teachings of his master Thales. He succeeded him and became the second master of that school where he counted Anaximenes and Pythagoras amongst his pupils.Little of his life and work is known today. Anaximander
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| Aleister Crowley Aleister Crowley, born Edward Alexander Crowley (), (12 October 1875 – 1 December 1947), was an English occultist, writer, mountaineer, poet, spy and yogi. He was an influential member of several occult organizations, including the Golden Dawn, the A∴A∴, and Ordo Templi Orientis (O.T.O.), and is best known today for his occult writings, especially The Book of the Law, the central sacred text of Thelema. He gained much notoriety during his lifetime, and was dubbed "The Wickedest Man In the World." Aleister_Crowley
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| Athena In Greek mythology, Athena (also called Athene, Attic:Athēnâ or , Athēnaía, Epic:Athēnaíē, Ionic:Athḗnē, Doric:Athána; ) is the shrewd companion of heroes and the goddess of heroic endeavour. She is the virgin patron of Athens, which built the Parthenon to worship her. Athena
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| Antoninus Pius Antoninus_Pius
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| Augustus Augustus
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| Abydos, Hellespont Abydos (GreekMysia, in Asia Minor, situated at Nara Burnu or Nagara Point on the best harbor on the Asiatic shore of the Hellespont. Across Abydos lies Sestus on the European side marking the shortest point in the Dardanelles, scarcely a mile broad. The strategic site has been a prohibited zone in the twentieth century. Abydos,_Hellespont
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| Alamanni The Alamanni, Allemanni, or Alemanni were originally an alliance of Germanic tribes located around the upper Main river (Germany). One of the earliest references to them is the cognomen Alamannicus assumed by Caracalla, who ruled the Roman Empire from 211–17 and claimed thereby to be their defeater. Alamanni
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| Agrippina the Younger Julia Agrippina; known as Agrippina Minor (Minor Latin for the ‘younger’, Classical Latin:IVLIA•AGRIPPINA; from the year 50, called IVLIA•AVGVSTA•AGRIPPINA, Greekη Ιουλία Αγριππίνη, November 6, 15 - between March 19 and March 23, 59) was a Roman Empress. She was a great granddaughter of Emperor Augustus, great niece and adoptive granddaughter of Emperor Tiberius, sister to Emperor Caligula, niece and wife of Emperor Claudius and mother of Emperor Nero. Agrippina_the_Younger
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| Alexander Severus Alexander_Severus
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| Archimedes Archimedes of Syracuse (Greek:c. 287c. 212Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Among his advances in physics are the foundations of hydrostatics, statics and the explanation of the principle of the lever. Archimedes
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| Antibiotic resistance Antibiotic resistance is the ability of a microorganism to withstand the effects of antibiotics. It is a specific type of drug resistance. Antibiotic resistance evolves via natural selection acting upon random mutation, but it can also be engineered by applying an evolutionary stress on a population. Antibiotic_resistance
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| Arabic alphabet The Arabic alphabet (أبجدية عربية) is the script used for writing several languages of Asia and Africa, such as Arabic, Persian, and Urdu. After the Latin alphabet, it is the second-most widely used alphabet around the world.The alphabet was first used to write texts in Arabic, most notably the Qur'an, the holy book of Islam. Arabic_alphabet
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| Anal sex Anal sex most often refers to the sex act involving insertion of the penis into the anus. The term anal sex can also sometimes include other sexual acts involving the anus, including but not limited to anilingus and fingering.It is a form of sexual behavior considered to be comparatively high in risk, due to the vulnerability of the tissues and the concentration of infectious microorganisms not found elsewhere on the body. Anal_sex
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| Automated theorem proving Automated theorem proving (ATP) or automated deduction, currently the most well-developed subfield of automated reasoning (AR), is the proving of mathematical theorems by a computer program. Automated_theorem_proving
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| Ajmer This article is about a city in central Rajasthan, for the historical region, see Ajmer region.Ajmer ( ), formerly written Ajmere, is a city in Ajmer District in India's Rajasthan state. Ajmer is a very beautiful city, surrounded by the spectacular Aravalli Mountains. Ajmer
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| Ajmer-Merwara Ajmer-Merwara (also Ajmere-Merwara) is a former province of British India in the historical Ajmer region. The territory of the province was ceded to the British by Daulat Rao Sindhia by a treaty on June 25, 1818.The province consisted of the districts of Ajmer and Merwara, which were physically separated by the territory of Rajputana Agency. Ajmer-Merwara
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| Artemis Artemis was one of the most widely venerated of the Ancient Greek deities and one of the oldest. In the classical period of Greek mythology, Artemis (Greek:nominative) , (genitive) ) was often described as the daughter of Zeus and Leto, and the twin sister of Apollo. Artemis
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| AOL Instant Messenger AOL Instant Messenger (AIM) is an instant messaging and presence computer program which uses the proprietary OSCAR instant messaging protocol and the TOC protocol to allow registered users to communicate in real time. It was released by AOL in May 1997. Stand-alone official AIM client software includes advertisements and is available for Microsoft Windows, Mac OS, Mac OS X, and Linux. AOL_Instant_Messenger
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| Constructed language Talk:Constructed_language
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| Symphony No. 9 (Beethoven) Symphony No. 9 in D minor, Op. 125 "Choral" is the final symphony of Ludwig van Beethoven. Completed in 1824, the symphony is one of the best known works of the Western classical repertoire and is considered one of Beethoven's greatest masterpieces.The symphony was the first example of a major composer using voices in a symphony. Symphony_No._9_(Beethoven)
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| Bertolt Brecht ''German poet, playwright, and theatre director. An influential theatre practitioner of the 20th century, Brecht made equally significant contributions to dramaturgy and theatrical production, the latter particularly through the seismic impact of the tours undertaken by the Berliner Ensemble—the post-war theatre company operated by Brecht and his wife and long-time collaborator, the actress Helene Weigel—with its internationally acclaimed productions. Bertolt_Brecht
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| Bagpipes Bagpipes are a class of musical instrument, aerophones using enclosed reeds fed from a constant reservoir of air in the form of a bag. Though the Scottish Great Highland Bagpipe and Irish uilleann pipes have the greatest international visibility, bagpipes have historically been found throughout Europe, Northern Africa, the Persian Gulf, and the Caucasus. Bagpipes
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| Barnard's Star Barnard's_Star
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| Baptism In Christianity, baptism (from Greek baptizo:ablutions") is the ritual act, with the use of water, by which one is admitted to membership of the Christian Church and, in the view of some, as a member of the particular Church in which the baptism is administered. Baptism
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| Book of Revelation The Book of Revelation, also called Revelation to John, Apocalypse of John (, from the , Apokálypsis Iōánnou), and Revelation of Jesus Christ is the last canonical book of the New Testament in the Christian Bible. It is the only biblical book that is wholly composed of apocalyptic literature. Book_of_Revelation
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| Biotechnology Biotechnology is technology based on biology, especially when used in agriculture, food science, and medicine. United Nations Convention on Biological Diversity defines biotechnology asBiotechnology is often used to refer to genetic engineering technology of the 21st century, however the term encompasses a wider range and history of procedures for modifying biological organisms according to the needs of humanity, going back to the initial modifications of native plants into improved food crops through artificial selection and hybridization. Biotechnology
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| Boudica Boudica (; also spelled Boudicca), formerly known as Boadicea ( Boudica
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| Bacterial vaginosis Bacterial vaginosis (BV) is the most common cause of vaginal infection. For grammatical reasons, some people prefer to call it vaginal bacteriosis. It is not generally considered to be a sexually transmitted infection (see causes below). BV is caused by an imbalance of naturally occurring bacterial flora, and should not be confused with yeast infection (candidiasis), or infection with Trichomonas vaginalis (trichomoniasis) which are not caused by bacteria. Bacterial_vaginosis
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| Black hole In general relativity, a black hole is a region of space in which the gravitational field is so powerful that nothing, including light, can escape its pull. The black hole has a one-way surface, called an event horizon, into which objects can fall, but out of which nothing can come. It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect blackbody in thermodynamics. Quantum analysis of black holes shows them to possess a temperature and Hawking radiation. Black_hole
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| Bat Bats are mammals in the order Chiroptera (). The forelimbs of all bats are developed as wings, making them the only mammals naturally capable of sustained flight (other mammals, such as flying squirrels, gliding possums and colugos, can only glide for limited distances). Bat
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| Black people The term black people usually refers to a racial group of humans with a dark brown skin color, but it has also been used to categorise a number of diverse populations into one common group. Some definitions of the term include only people of relatively recent Sub Saharan African descent (see African diaspora). Black_people
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| Bestiary bestiary, or Bestiarum vocabulum is a compendium of beasts. Bestiaries were made popular in the Middle Ages in illustrated volumes that described various animals, birds and even rocks. The natural history and illustration of each beast was usually accompanied by a moral lesson. Bestiary
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| Behistun Inscription The Behistun Inscription (also Bisitun or Bisutun, Modern Persian:Old Persian:Bagastana, meaning "the god's place or land") is a multi-lingual inscription located on Mount Behistun in the Kermanshah Province of Iran, near the town of Jeyhounabad in western Iran.The inscription includes three versions of the same text, written in three different cuneiform script languagesOld Persian, Elamite, and Babylonian. Behistun_Inscription
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| Basel Basel
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| Battle of Actium The Battle of Actium was the final engagement in the Final War of the Roman Republic. It was fought between the forces of Octavian and the combined forces of Mark Antony and Cleopatra. The battle took place on September 2, 31 BC, on the Ionian Sea, near the Roman colony of Actium in Greece. Octavian's fleet was commanded by Marcus Vipsanius Agrippa, while Antony's fleet was supported by the ships of his lover, Cleopatra VII, queen of Ptolemaic Egypt. Battle_of_Actium
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| Physical cosmology Physical cosmology, as a branch of astronomy, is the study of the largest-scale structures and dynamics of our universe and is concerned with fundamental questions about its formation and evolution. Cosmology involves itself with studying the motions of the celestial bodies and the first cause. Physical_cosmology
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| Croatia Croatia
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