Which event led directly to south carolina's secession from the united states?

a) the firing upon ft. sumter in charleston
b) the cession of north carolina from the union
c) the victory of abraham lincoln in the election of 1860
d) the confederate victory at the first battle of bull run

Why might the spanish government have approved of the encomienda system? a the system allowed for fair treatment of all under it, leading to a happy and prosperous colony. b the system used natives as slaves which meant the government was able to maximize their profit of exported goods. c the system allowed for mostly profitable trade within the different colonies. d the system was a great example of how to successfully run a colony, making spain a world power.