The Diocletianic Persecution of Christians in the Roman Empire ends.📜 HISTORICAL EVENTS🌍 GLOBAL🗓️ 30 April 0311Calendar year
Enguerrand de Marigny is hanged at the instigation of Charles📜 HISTORICAL EVENTS🌍 FRANCE🗓️ 30 April 1315Royal court official under Philip IV of France
Spain gives Christopher Columbus his commission of exploration. He is named admiral of the ocean sea📜 HISTORICAL EVENTS🌍 SPAIN🗓️ 30 April 1492Italian navigator and explorer (1451–1506)
Henry IV of France issues the Edict of Nantes📜 HISTORICAL EVENTS🌍 FRANCE🗓️ 30 April 1598King of France from 1589 to 1610
Juan de Oñate begins the conquest of Santa Fe de Nuevo México.📜 HISTORICAL EVENTS🌍 UNITED STATES🗓️ 30 April 159816/17th-century Spanish conquistador and colonial governor in New Spain
Eighty Years’ War: Dutch Republic forces recapture a strategically important fort from Spain after a nine-month siege.📜 WARS🌍 SPAIN🗓️ 30 April 1636C. 1566/1568–1648 war in Habsburg Netherlands
On the balcony of Federal Hall on Wall Street in New York City📜 CITIES🌍 UNITED STATES🗓️ 30 April 1789Memorial in Manhattan, New York
Louisiana Purchase: The United States purchases the Louisiana Territory from France for $15 million📜 HISTORICAL EVENTS🌍 INDIA🗓️ 30 April 18031803 acquisition of region of Middle America land by the U.S. from France
The Territory of Orleans becomes the 18th U.S. state under the name Louisiana.📜 HISTORICAL EVENTS🌍 UNITED STATES🗓️ 30 April 18121804–1812 U.S. organized incorporated territory
Nicaragua declares independence from the Central American Federation.📜 HISTORICAL EVENTS🌍 UNITED STATES🗓️ 30 April 1838Country in Central America
Charles Dickens publishes the first edition of his literary magazine📜 HISTORICAL EVENTS🌍 UNITED KINGDOM🗓️ 30 April 1859English writer and journalist (1812–1870)
A 65-man French Foreign Legion infantry patrol fights a force of nearly 2📜 INDIAN ARMY🌍 FRANCE🗓️ 30 April 1863French Army corps of foreign nationals
American Civil War: Confederate forces led by General E. Kirby Smith attack federal troops retreating across the Saline at Jenkins’ Ferry📜 POLITICS🌍 UNITED STATES🗓️ 30 April 18641861–1865 conflict in the United States
The Camp Grant massacre takes place in Arizona Territory.📜 INDIAN ARMY🌍 UNITED STATES🗓️ 30 April 18711871 massacre of Pinal and Aravaipa Apaches
Governor of New York David B. Hill signs legislation creating the Niagara Reservation📜 HISTORICAL EVENTS🌍 GLOBAL🗓️ 30 April 1885Head of government of the U.S. state of New York
J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle📜 PHYSICS🌍 UNITED KINGDOM🗓️ 30 April 1897British physicist (1856–1940)
Hawaii becomes a territory of the United States📜 HISTORICAL EVENTS🌍 UNITED STATES🗓️ 30 April 1900Island state of the United States
Albert Einstein completes his doctoral thesis at the University of Zurich.📜 PHYSICS🌍 GLOBAL🗓️ 30 April 1905German-born theoretical physicist (1879–1955)