What was one reason that nat turner's rebellion in 1831 caused so much concern in the southern slave-holding states? a. the revolt caused many plantation owners to stop supporting the institution of slavery. b. the revolt resulted in an end to the expansion of slavery in newly organized territories. c. the revolt proved that enslaved persons were willing to use violence to secure their freedom. d. the revolt showed that the mistreatment of enslaved persons would result in a national civil war.

it's C because,

Nat Turner's Rebellion was a slave ... The state executed 56 slaves accused of being part of the rebellion, and many ... He witnessed a solar eclipse on February 12, 1831 and was convinced that it ... alarm led to whites' attacking blacks throughout the South

I believe the answer is C

d: social contract theory

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.