Who were the first Americans?and what do we know about those first Amercans?

The first Americans are believed to have been Clovis people who came to America on the Beringia, a land bridge as they were following herds of animals for food. They were a nomadic people who went where the food was. They were what beame known as the American Indian as they were here when Europeans first arrived.

Explanation:

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

is this question from a book? ?