4. Idaho's Coeur d'Alene reservation today includes about 250,000 acres.  Prior to a series of U.S. treaties and sales, their land encompassed:

	a. More than 3.5 million acres
	b. About 2 million acres
	c. About 1 million acres

Correct!
Coeur d'Alene tribal lands included some 3.5 million acres before a series of treaties and sales by the U.S. government whittled it down to the current size.

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