If your home is a longhouse, you likely come from the region. A. Northeast
B. Plains
C. Arctic
D. Southwest

A. the Northeast

Explanation:

The longhouse was a type of home built by the American Indians in the Northeast, particularly those of the Iroquois nation. Another name for the Iroquois was Haudenosaunee which meant "People of the Longhouses".  The longhouse was a long, narrow house that was traditionally built by the American Native Indians of the Northeast Woodlands. The main tribes who used the longhouse were those belonging to the powerful Iroquois Confederacy which included the Mohawk, Oneida, Onondaga, Cayuga and Seneca people.

your answer would be (b)

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