Why are the spiro mounds location important to Oklahoma today?

The mounds are one of the most important American Indian sites in the nation. The prehistoric Spiro people created a sophisticated culture which influenced the entire Southeast. Artifacts indicate an extensive trade network, a highly-developed religious center, and a political system which controlled the entire region.

Explanation:The Spiro Mounds are a part of a time period in archaeology known as the Mississippian. The Spiro Mounds are important because they are located along the Arkansas River and the people of Spiro influenced many of the people with which they traded.

it increased the power of the king of england.

a. always outside of government control.