How do archaeologists know Poverty Point was a major trade center?

Archaeologists identify Poverty Point culture by its characteristic artifacts and the nonlocal rocks used to make them. Imported rocks and minerals include various cherts and flints, soapstone, hematite, magnetite, slate, galena, copper, and many others.Many artifacts from places far away were found at Poverty Point. This shows that people came and traded objects and they had some that were left.

Explanation:

I hope it will helpful to you

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.