No "Americans" arrived in North America. However, in 10 A.D. Vikings explored the fringes of North America. Also, Native Americans crossed over from Siberia into Alaska over a land bridge about 12,000 years ago. In 1501, Amerigo Vespucci officially discovered America but thought it was Asia so he did not dock. Then in 1592, Christopher Columbus found and docked in the Caribbean and was the first man to land on America.
The federal government has taken a larger role so that makes the answer true
Answer:
The Paleolithic people were skillful hunters and developed sharp weapons made of stone for hunting purpose. They had a knowledge of art and infrastructure which was evident from the discovery of metal tools, jewellery like bracelets made of shells, bones and ivory. They even did paintings on the rocks and body art.
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Answer: all one country, so yes
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before the arrival of European settlers.