B)
This is because as a result of the Emancipation Proclamation, the Union’s goal was now to free slaves along with preserving the Union. The slaves in the Southern states began to flee North toward freedom too. Lastly, the public in Europe supported the Union, so the leaders of those countries turned against the Confederate States.
In many ways, the encomienda system resembled a feudal system: The Spanish monarchy granted conquistadors, soldiers, and other officials control over a specific number of Indians, and later Africans, as well as the lands on which those Indians lived.
The answer to the question above is C