Answer:
The states where, Missouri, Kentucky, Maryland, and Delaware. Later after Virginia spilt into two, the portion which was recognized as West Virginia choose to stay with the Union.
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<span>Ten Percent Plan
The the most outspoken Confederates were not allowed to participate in any active role in the reestablished state governments under Lincoln's arrangement, and only 10 percent of a state's 1860 electorate was needed to take a dependability oath before Lincoln would perceive the state government they set up as legitimate. The Radicals objected the Lincoln's "Ten Percent Plan" in 1864.</span>
They went into war because the Americans settled there despite Native Americans Protests. They were led by Cheif Little Turlte
