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Over 20,000 years ago Indians came from Asia across the Bering Strait. Icelandic Viking Leif Ericson sailed to America in 1000. The history of the USA began a little more than 500 years ago. In 1492 Christopher Columbus discovered America to the whole world. He thought that it was India. Columbus died believing that Cuba was part of Asia. English, Spanish, Portuguese, Butch and French explorers sailed there for gold and riches. But they didn't stay in America. The first English colony Jamestown appeared in 1607 in Virginia. On the 6th of September in 1620 a group of people left England for America. They sailed from the English city of Plymouth, on board the ship Mayflower. There were 74 men and 28 women on the Mayflower. They set up a colony.