The Unassigned Lands were 2 million acres of land that stretched north to south in the middle of Indian Territory that were created by __________.

The Unassigned Lands became available after the Creek and Seminole Nations ceded land to the United States through treaty agreements following the Civil War. The land was not assigned to another tribe, which is why it became known as the Unassigned Lands. The correct choice is “US treaty agreements with the Seminole and Creek.”

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