The western front in World War I was

The Bay of Pigs invasion

Kristallnacht was

The United States intervened militarily in Mexico when Mexican president Lázaro Cárdenas nationalized the oil industry in March 1938.

John Maynard Keynes’s answer to the central problem of the depression was for governments to balance budgets and curtail public spending.

The new age of global interconnectedness

The Twenty-one Demands were issued

The U.S. Civil Rights Act of 1964 prohibited discrimination on the basis of race but not gender.

The power of Islam as a means of staving off secular foreign influences was demonstrated by the revolution that took place in Iran in 1979.

Widespread Mexican migration to the United States during and after the Great War suggested the attractiveness of the United States for at least some Latin Americans.