The answer is B.
Wegener could not explain how similar fossils could be found on different continents.
Answer:
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
