Final answer:
The Iroquois Indians used natural materials like wood and bark to build their longhouse shelter.
Step-by-step explanation:
The shelter built by the Iroquois Indians in the Northeast was known as a longhouse. They used natural materials such as wood and bark to construct it. The frame of the longhouse was made from poles and tree trunks, while the walls and roof were made from sheets of bark.
Learn more about Iroquois Indians and their longhouse shelter