Final answer:
The Civil War caused economic devastation in the Indian Territory due to looting and property destruction. It also caused deep divisions among the tribes, leading to internal conflicts.
Step-by-step explanation:
The Civil War had a profound impact on the Indian Territory, present-day Oklahoma. The best option from your choices would be (d) 'looting caused economic devastation. Civil War battles and raids often resulted in looting and destruction of property, which negatively affected the economic stability of the tribes inhabiting those areas. It's also essential to remember that the war caused deep divisions among the tribes, with some choosing to side with the Union and others with the Confederacy, which resulted in internal conflicts and created further disruption.
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