Native Americans in North America established themselves in 10 separate culture areas: the Arctic, the Subarctic, the Northeast, the Southeast, the Plains, the
Southwest, the Great Basin, California, the Northwest Coast and the
Plateau. They established themselves according to the type of landscape or terrain and weather they have.
What are the answer options?
The name for this idea is "Domino Effect" - this is a theory that says that if one country falls to Communism the neighboring countries would also fall to Communism, much like pieces of Dominos fall when a neighboring piece fell.
This theory was important in the Foreign politics of the US during the cold war.
Which war are you asking about. There have been hundreds throughout history
