Which of the following events gave the first humans the ability to migrate from Asia to America?
A.
the invention of the wheel
B.
the invention of the boat
C.
the rise of ocean levels due to climate change
D.
the uncovering of a land bridge that connected the two continents
They migrated by boat and crossed the land bridge that formed across the Bering straights during the ice age when ocean levels fell. so they could discover a new world and new land.
