752 – Mayan king Bird Jaguar IV of Yaxchilan in modern-day Chiapas, Mexico, assumes the throne.
1481 – The largest of three earthquakes strikes the island of Rhodes and causes an estimated 30,000 casualties.
1491 – Kongo monarch Nkuwu Nzinga is baptised by Portuguese missionaries, adopting the baptismal name of João I.
1568 – Angered by the brutal onslaught of Spanish troops at Fort Caroline, a French force burns the San Mateo fort and massacres hundreds of Spaniards.
1616 – Treaty of Loudun ends a French civil war.
1715 – A total solar eclipse is visible across northern Europe and northern Asia, as predicted by Edmond Halley to within four minutes accuracy.
1791 – The Constitution of May 3 (the first modern constitution in Europe) is proclaimed by the Sejm of Polish–Lithuanian Commonwealth.
1802 – Washington, D.C. is incorporated as a city after Congress abolishes the Board of Commissioners, the District's founding government. The "City of Washington" is given a mayor-council form of government.
1808 – Finnish War: Sweden loses the fortress of Sveaborg to Russia.
1808 – Peninsular War: The Madrid rebels who rose up on May 2 are executed near Príncipe Pío hill.
1815 – Neapolitan War: Joachim Murat, King of Naples, is defeated by the Austrians at the Battle of Tolentino, the decisive engagement of the war.
1830 – The Canterbury and Whitstable Railway is opened; it is the first steam-hauled passenger railway to issue season tickets and include a tunnel.
1837 – The University of Athens is founded in Athens, Greece.
1848 – The boar-crested Anglo-Saxon Benty Grange helmet is discovered in a barrow on the Benty Grange farm in Derbyshire.
1849 – The May Uprising in Dresden begins: The last of the German revolutions of 1848–49.
1855 – American adventurer William Walker departs from San Francisco with about 60 men to conquer Nicaragua.
1901 – The Great Fire of 1901 begins in Jacksonville, Florida.
1913 – Raja Harishchandra, the first full-length Indian feature film, is released, marking the beginning of the Indian film industry.