The most widespread Indian groups in the West were the Palin Indians. However, the great white migration accelerated the demised of their way of life by destroying the basis of their economy. Can you please explain the basis of the Plain Indians economy and how the white settlers annihilated

The Plain Indians are the Native American tribes and First Nation band governments who have historically lived on the Great Plains. And, also the Canadian Prairies in North America.

Their economy is based on the hunting-farming cultures for centuries prior to European contact. Historic horse cultures that flourished from the 17th century through the late 19th century was well documented. Their nomadic lifestyle of hunting animals, living within an enclosed cluster, raising crops as well as trading with other tribes was successful till the white migration to their lands.

The migration led to the fight between the whites who tried to dominate them and the original land owners. after the success of the war (for the white), the cultures and traditions of the Plain Indians were banished. In schools, their history was not taught leading to loss of information about them.

Explanation:

because mexico wanted to choose a centralized location

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.