XYZ Affair. 1797. US attack French ships after refusing to bribe ministers. Settled 1800. French Revolutionary Wars.

Yorktown, Siege. 1781. British surrender to American and French forces. American Revolution.

Zapata, Emiliano. 1879-1919. Mexican revolutionary hero. “Land and liberty!”. Ayala Plan.

Zelaya, José. 1853-1919. Nicaraguan president 1894-1909. Attempted to unify Central America by force and revolution 1909.

Zinoviev Letter. 1924. From COMINTERN to London advising worker revolution. Labour defeated.