Which factor played the most significant role in the start of World War 2

there are multiple factors that played an important role in the start of World War II. one of the most important ones is the Treaty of Versailles, that ended World War I. the Treaty had clauses that forced Germany to demilitarize its armed forces, it took territories that was once under German control, and it made the country paid for expensive war reparations to other countries, that put its economy in a depression.. these measures created, in the long term, a sense of revenge in German's society. these feeling of revenge is associated with the rise of Hitler to power because of his message to take Germany back to the place of power it once had.

Explanation:

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.

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