The federal governments had a responsibility of drawing up more treaties, as per the Articles of Confederation. The government could not maintain power and order, which was the result of weaknesses of the Article of Confederation. The main aim of this article was to unify the countries, during the war.
Answer:
I am not 100% sure on this answer but if you look at the time frame and other events that happened in or around that time you can kinda use proccess of elemination and end up with
B. Europeans reduced freedom and forced colonized people to work for little to no wages.
Let me know if this is wrong.