Final answer:
Three language families spoken by Indigenous peoples in northeastern North America are Algonquian, Iroquoian, and Siouan.
Step-by-step explanation:
Three language families spoken by Indigenous peoples in northeastern North America are Algonquian, Iroquoian, and Siouan. Algonquian includes languages like Abenaki, Mi'kmaq, and Cree, while Iroquoian includes Mohawk, Seneca, and Oneida. Siouan includes languages like Dakota, Sioux, and Crow.
Learn more about language families spoken by Indigenous peoples