There is a theory that the North American Indians (so-called "Native Americans") crossed over from Asia by way of a land bridge that once existed in pre-historic times between the two continents - roughly along the lines of the Aleutian Island chain.
From where did early north Americans migrate?
Slavery
Case they war cool on their country
yes.
They migrate southwards in early fall, and winter from Mexico to Peru. Return north in April.
The civil war they migrated because they where slaves for the south.
Walked across a land bridge.
because the climate went warmer
Jim Crow was still very alive in the south and the North was about change and more equal opportunities.
By boat.
Irrigation systems would be particularly important for early North Americans in arid regions such as the Southwest, where water availability is limited. Building irrigation systems would have enabled them to support agricultural practices and sustain communities in these dry environments.
Early Americans initially settled in North America.
the first Americans came from Asia and crossed what is now the bering strait it was land then. they came by foot to get food