The answer is A! :) hope this helps
It was a very popular practice during its time. Europe transported many of their good to the colonies. They needed people to help work, so they captured slaves from African colonies.
When war broke out in Europe and the pacific, the United States passed the Neutrality Act of 1939 - warring nations could only buy military supplies from the US on a 'Cash and Carry' basis.
Congress asked President Johnson to take control of Reconstruction.
It is an exemple of checks and balances