1815 siege during the Neapolitan War

1815 eruption of Mount Tambora — catastrophic volcanic eruption in present-day Indonesia

Unification of Italy — creation of the politically and administratively integrated nation of Italy (1815–1871)

1815 treaties between the United States and Algeria

Ottoman battle in Hejaz, 19th century

Congress of Vienna — conference of ambassadors of European states (September/November 1814 to June 1815)

Capture of HMS Cyane

Battle of the Neapolitan War

Second Serbian Uprising — 1815–1817 revolt in Serbia against the Ottoman Empire

1815 conflict of the Napoleonic Wars

1815 treaty between Naples and Austria