What tribe is being referenced in this reading selection?
Later in the nineteenth century, which tribe, even though it was decimated by disease, joined the
Mandan and Hidatsa people in central North Dakota, becoming the third of the "Three Affiliated
Tribes."

Cheyenne
Shoshone
Arikara

The Arkara

Explanation:

Later in the 19th century, the Arikara, decimated by disease, joined the Mandan and Hidatsa people in central North Dakota, becoming the third of the "Three Affiliated Tribes." Today, these three groups live on the Fort Berthold Reservation in North Dakota

i believe the answer would be 1.