He commanded Allied forces during WW2. He was supreme Allied commander and organised the D-Day landings along with his British counterpart, Field Marshall Montgomery. MacArthur was also a General during WW2 and commanded the Pacific theatre, he was the General to receive the Japanese surrender on the USS Missouri in Tokyo Bay. He was relieved of his command during the Korean War after suggesting to atomically bomb China, who had entered the war on the North Korean side.
The British thought colonists had to pay more taxes/cost for the French and Indian War. Parliament also wanted more control, so they did a series of acts (Coercive Act) that all ended into the Intolerable Act.