Answer:
The Monroe Doctrine granted the United States the ability to independently intervene in the trading economy. Having the ability to act alone and be neutral to war situations allowed them to make economic decisions based off of what they felt was best for them to prosper.
Explanation:
The freedom of enslaved African Americans on the 1st of January in 1863, as well as their right to civil liberty.
Idk but I need to answer a question but you can Google it your welcome
D. Science Fiction...............