How did the living conditions differ between eastern and western tribes during the prehistoric era?

Theoretical origins of American Indians. Recorded

history began in Oklahoma in 1540 when Coronado crossed the plains

with his conquistadors. Some believe the Spanish were the first Europeans in Oklahoma. For centuries before that, however, people

moved back and forth across this area and many lived here. Some

may have had European origins.

There are many theories today concerning the origin of the American Indian. The Indians had their own beliefs, even in 1540 and

earlier. Most tribes had legends or traditional histories. These were

passed orally from generation to generation and contained stories

of migration. Many legends claimed that early members of the tribe

came from “the land of the setting sun,” or somewhere to the west of

California. Others claimed to have come from the north. Some even say

they came from the south or the east.

ICE AGE MIGRATIONS. The theory most commonly accepted

among experts concerns the Pleistocene Age, or Ice Age. Scientists and

historians differ widely on how many years ago huge glaciers formed an

immense ice cap which covered most of the northern half of the Northern Hemisphere. However, they agree that this ice cap caused a lowering

Explanation:

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.