The USA's decision to enter WWI was influenced MOST DIRECTLY by the Germans’... * Invasion of France
Introduction of poison gas
Development of the Schlieffen Plan
Use of unrestricted submarine warfare

hitler was elected as a strong leader by germans who felt angry following the treaty of versailles.

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.