Question

When did colonists first come to America?

Answer 1

Do you mean the first English colonists?

http://www.google.com/search?q=first+colonists+to+america&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

Answer 2

Or about 30,000 years ago?

see http://www.bradshawfoundation.com/journey/