American History 1 By BethennySmith 1400 Prehistory- C.E. Most ancestors of the Native Americans crossed the land bridge through Beringia into North America an estimated 15,000-20,000 years ago. 1492 Columbus reaches the Bahamas 1607 Jamestown 1620 Plymouth 1675 King Philip's War (stared in 1675) 1676 King Phillip's War (ended in 1676)