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.

whose power in the senate is equal to the power of the speaker of the house?

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.