Answer:
The USS Maine actually exploded when an internal mine detonated.
Explanation:
American newspapers claimed that the ex[plosion was caused by Spanish soldiers in Cuba, thus igniting a large anti-Spain movement which led directly to the war with Spain.
The Constitutional Convention dealt with the slave population by developing the 3/5ths Compromise. The 3/5ths Compromise stated that for every 5 slaves, 3 of them will count towards a states population regarding representation in the House of Representatives and for taxation purposes. This allowed for slave states to have signficiant political power in the House but also results in the state government having to pay more direct taxes to the federal government.