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Index/Topics/World War I and Its Aftermath

World War I and Its Aftermath

The causes and consequences of World War I, including the rise of fascist and communist movements, and the lead-up to World War II.

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Jan 16, 2026

What changes did the Revenue Act of 1913 make to tax rates and the administration of the federal income tax?

The Revenue Act of 1913 (the Underwood–Simmons or Underwood Tariff Act) simultaneously slashed tariff rates and re‑established a federal income tax, shifting the federal revenue mix away from duties t...

Jan 6, 2026

world war 1 and 2

World War I erupted from a web of militarism, imperial rivalry, alliances, and nationalism, with the assassination of Archduke Franz Ferdinand serving as the immediate spark . The war’s devastation—mi...