The answer is false, loyalists remained loyal to one area.
The reasons why World War I happened are multiple and complex. One important is the fact that Germany lacked any real colonies prior to World War I, at least compared to the other nations which had massive and important colonies such as Great Britain or France. Another thing was general dissatisfaction and nationalism within the Austro-Hungarian empire.
Your answer is absolutely b.
Andrew Jackson became known as a war hero because of the outcome of this final battle in the War of 1812, in which he victoriously defeated the British.
The Bank's existence is a great example of implied powers: the Constitution doesn't say that Congress has the right to establish a bank, but its defenders claimed that one was necessary to carry out the Congress' power to collect taxes.