What was the Iroquois Confederacy?

A. An alliance between Iroquoian-speaking peoples in northeastern North America.

B. An alliance between Iroquoian-speaking peoples, and people who spoke algonquian languages.

C. An alliance between Iroquoian-speaking peoples and the United States government.

D. An alliance between indigenous peoples who spoke Algonquian, Iroquoian, and Siouan languages