1935 — The Social Security Act provides a federal-state program of unemployment compensation and a federal program of old-age retirement insurance.

• Logan Chiropractic College founded in the State of Missouri.
• The Wealth Tax Act increases income tax for wealthy individuals and corporations, and raises the gift and estate taxes.
• Plebiscite in the Saarland favors its reunification with Germany, marking the start of expansion under Hitler. Hitler renounces the Versailles Treaty and reintroduces the military draft.
• Persia is renamed Iran.
• Arthur Dempster discovers U-235, an isotope of uranium later used in nuclear weapons and in nuclear power plants.
• Alcoholics Anonymous is organized in New York City.