Brazil getting coffee was a result of the Colombian exchange so your answer would be B
After the explosion of the USS Maine, the US public was whipped up into an anti-Spanish hysteria. Despite Spain's desire to avoid war and President William McKinley's distaste for war, the yellow press continued feeding the public's appetite for anti-Spanish news. Hawks like then-Assistant Secretary of the Navy Theodore Roosevelt loudly criticized the reluctant McKinley for being weak and afraid.
To help freed slaves succeed
Europeans traded sailing equipment to other people so they could have better transportation.