What ocean liners sinking provided impetus in leading the US to join the Allies in World War 1?
The attack on Pearl harbor did indeed bring US to the war.
USS West Virginia
Which patriots militia leader convinced many Native Americans to abandon their british allies leading to the recovery of the fort at Vincennes Indiana?
The Treaty of Versailles blamed World War I on Germany and forced them to pay compensation to the allies, leading to national poverty. Adolf Hitler, leader of the Nazi Party, was a very influential speaker and leader who provided Germans with a scapegoat: the Jews. Germans liked the Nazi Party because they needed someone or something to believe in and Hitler, though sick and corrupt in his methods, provided it.
His allies were the Greek city-states who provided him with additional soldiers and then reinforcements. Also various petty kings glad to turn against the Persians who had ruled them aided him. Then there were the tribes which provided him with mercenary cavalry and light infantry, and the states which he took over from the Persians who had no option but to serve him as he had taken them over from Persia.
The U.S.A. desperately wanted to stay out of World War 1 and believed that they should not get involved in any foreign dispute. However, unrestricted submarine warfare by the Germans, the sinking of the Lusitania by the Germans, and the Zimmerman telegraph that was intercepted by the allies and revealed a plot by Germany to get Mexico to attack the U.S. if the U.S. joined the war on the side of the allies. These factors…
During World War II, the Allies helped occupied nations in Western Europe by providing behind-the-lines military assistance of all kinds; later, their direct invasion of the Continent liberated these same nations. After the war, the Allies (especially the United States) provided massive material and humanitarian aid for the rebuilding of these nations.
During World War I, the United States joined the allies because its neutrality had been violated by Germany -- the leading nation among the "Central Powers," against which the Triple Alliance was fighting. In addition, sympathy in America had largely already moved in the direction of the allies because of the close ties between many Americans and Great Britain.