a series of complicated factors caused the war, including a brutal assassination that propelled Europe into the greatest conflict the continent had ever known. The murder of Archduke Franz Ferdinand outraged Austria-Hungary. ... Austria-Hungary was furious and, with Germany's support, declared war on Serbia on July 28.
Humanists believe that people are free to think for themselves.
Congress was split, as the French had helped the young United States during the Revolutionary War, however, many where confused what direction the revolution was going (spoiler alert, the French Revolution traded a monarchy for a dictatorship with Napoleon at the helm - so it didin't accomplish a whole lot).
Although both parties(the Democratic-Republicans and Federalists) had different hopes for the french revolution, they both agreed that war would be economically not possible and would possibly open the U.S up to attack, so the U.S remained neutral.
By what you do. For example if you lived in Florida you might go surfing as if you lived in Alberta Canada you would go Snow boarding.