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Explanation:
The significant starting point of slavery in the 13 colonies in America was in August, 1619, when twenty African slaves who were seized from a Portuguese slave ship, were brought ashore in the British colony of Jamestown, Virginia by White Lion, a privateer ship owned by Robert Rich, Earl of Warwick.
European settlers in the North American colonies began relying on African slaves and indenture servants for sources of cheap labour.
Enslaved Africans were forced to work on rice and tobacco plantations from the Chesapeake bay colonies of Maryland and Virginia to Georgia. By 1640 both slaves and indentured servants existed.
Maya observed the sky and calendars to predict solar and lunar eclipses, the cycles of the planet Venus, and the movements of the constellations.
He Mexican Revolution<span> was brought on by, among other factors, tremendous disagreement among the </span>Mexican<span> people over the dictatorship of President Porfirio Díaz , who, all told, stayed in office for thirty one years.</span>
