World War I: A global conflict fought from 1914 to 1918 involving many nations and resulting in significant political, social, and economic changes.
Roaring Twenties: A period of cultural dynamism in the 1920s characterized by economic prosperity, jazz music, flapper culture, and advancements in technology.
Great Depression: The severe worldwide economic downturn that lasted throughout most of the 1930s, causing widespread unemployment and poverty.