Bartolomeu Dias was the first European explorer to sail around the southern tip of Africa discovering what is called the Cape of Good Hope. This discovery made it possible for Europeans to trade with Asia and India via water instead of across land, which was very expensive at the time.
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He made the first call on March 10, 1876, to his assistant, Thomas Watson: "Mr. Watson--come here--I want to see you."
John Locke believed that people were born with the natural rights of life, liberty and property. He believed the main purpose of government should be to protect those natural rights. His version of a social contract supports the individual rather than the state or the government. His ideas were the foundation for the enlightenment.