Answer:
the Great Plains
Step-by-step explanation:
The Eastern Woodland tribes live in the Great Plains of the United States.
The Eastern Woodlands was occupied by people of North America and extended from the Great Lakes region to the Gulf of Mexico and the Atlantic Ocean to the eastern Great Plains. The people speaking Iroquoian or Algonquian were used to live in Eastern Woodlands tribes.
Hence, the correct answer is "the Great Plains".