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516| 200–700 | Central America [statistics and demography] | The Zapotec site of Monte Albán in Central America is at its peak in this period. It may have had 30,000 or more inhabitants. It is the centre of a complex of public buildings, temples, and dwellings that cover 40 sq km/15 sq mi. | | 516 | India [astronomy] | The Indian astronomer and mathematician Aryabhata I produces his Aryabhatiya, a treatise on quadratic equations, the value of p, and other scientific problems, in which he adds tilted epicycles to the orbits of the planets to explain their movement. |
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