Final answer:
The Springer Amendment created a territorial government in Oklahoma and opened up the Unassigned Lands for settlement.
Step-by-step explanation:
The Springer Amendment was an amendment to the Indian Appropriations Act of 1889. Its primary purpose was to create a territorial government in Oklahoma, which was previously known as the Oklahoma District. The amendment also opened up the Unassigned Lands in present-day Oklahoma for settlement. It did not, however, create Oklahoma Territory. This was done through the Organic Act of 1890.
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