When the Europeans discovered the united states, focus became exploring North America.
The Vikings.
Originally Amerigo Vespucci discovered America, but the most popular was the mistake Christopher Columbus made that discovered America for the Europeans for the 2nd time.
He convinced Europeans he had discovered a North and South America.
He led a group of Vikings, who were the first Europeans to land in North America.
Because North American Man was already here!
When Christopher Columbus sailed and "discovered" America, he also discovered corn and brought it back to Europe.
the pish, las. vegas
This matters if you mean when the early humans found it or when Europeans found it. Yes, when the Europeans found America, there were native Americans, but no one knows if there were people when the Native Americans migrated there.
Since 1492 when Columbus discovered some islands in the Caribbean
Since 1492 when Columbus discovered the Americas.
Yes, they were. Christopher Columbus discovered America for the Europeans, but he did not know that it was a new continent. He thought it was India. Later, Amerigo Vespucci described the territory as a new one. That's why the new continent was named America.