Idk what A B C and D answers are but I know that the answer to the question is Texas (not sure about territory tho)
Explanation:
Texas in the Civil War (PDF): Texas was a prominent state in the Civil War for several reasons. Texas was a part of the Confederacy. Fighting on the Fringe: The Civil War in Texas: Because Texas was deeply connected with the South, most Texans agreed that slavery was an important part of their economic stability.
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