The answer is b changing the way americans thought of the government i know this cause i had this test before
The last Muslim kingdom of Spain. It was seized by Ferdinand and Isabel being seen as one of the "problems" of 1492. Granada had a lot of Muslim influence (El Alhambra- a major region for trade and markets for European and luxury goods)
So Im guessing Europe
When the bomb was finally detonated atop a steel tower, an intense light flash and sudden wave of heat was followed by a great burst of sound echoing in the valley. A ball of fire tore up into the sky and then was surrounded by a giant mushroom cloud stretching some 40,000 feet across. With a power equivalent to around 21,000 tons of TNT, the bomb completely obliterated the steel tower on which it rested. The nuclear age had begun.