Question: Between what two states does the valley the Ojibwe ceded their rights to by the Treaty of Old Crossing form the border?
Sentence (from "Treaty of Old Crossing"): By the Treaty of Old Crossing (1863) and the Treaty of Old Crossing (1864), the Pembina and Red Lake bands of the Ojibwe, then known as Chippewa Indians, purportedly ceded to the United States all of their rights to the Red River Valley.
Relevant evidence: Yes