In the early 1800s, the government had began to move Native Americans away from white settlers. By
the end of the Civil War, about 250,000 Indians lived in the region west of the Mississippi River known
as "The Great American Desert."
Which was one belief shared by all Native American culture?
A. Native Americans were part of the natural world and that world was sacred.
B. Native Americans had the right to move to any lands they wanted.
C. Native Americans were given the land they lived on by law.
D. Native Americans had the right to use their lands for profit.

The American frontier includes the geography, history, folklore, and cultural expression of life in the forward wave of American expansion that began with English colonial settlements in the early 17th century and ended with the admission of the last remaining western territories as states in 1959.

Explanation:

This era of massive migration and settlement was particularly encouraged by President Thomas Jefferson following the Louisiana Purchase, giving rise to the expansionist philosophy known as "Manifest Destiny".