Based on what you already know about American Indians and about the east coast, what do you think the Cherokee, Iroquois, and Chickasaw groups would have in common?

Confederacy organization

Explanation:

The Cherokee are one of the native Americans. The Cherokee are considered as one of the ancient and indigenous people of Southeastern Woodlands of United States.

The Iroquois are also known as the Haudenosaunee. They are the powerful native confederacy of the United States. They are one of the powerful native Americans confederacy. The Iroquois society are matrilineal society.

The Chickasaw were well known as one of the fiercest warriors in the ancient Americas and they earned a nickname as "Spartans of the Lower Mississippi Valley."

One of the most common thing that they have in  common is that they have Confederacy organization.