Industrial Revolution: A period starting in the late 18th century marked by technological advancements and the shift from manual labor to machine-based manufacturing.
Roaring Twenties: The decade following World War I characterized by cultural dynamism, economic prosperity (at least initially), and societal changes such as increased consumerism and changing gender roles.
Cold War: The political tension between the United States and the Soviet Union from 1947 to 1991 that shaped international relations during this transition period.