January 17, 1878
Battle of Lincoln, New Mexico in 1878
Skirmish at the Chukchi Peninsula
Flour dust explosion in a Minneapolis mill in 1878
1878 Paris World's Fair — Third “World’s Fair” to be held in Paris
1878 battle of the Russo-Turkish War (1877–1878)
Treaty of San Stefano — peace treaty
Romanian War of Independence — Independence War of Romania as part of the Russo-Turkish War (1877–1878)
Shootout between the Lincoln County Regulators and Buckshot Roberts
Treaty of Berlin of 1878 — 1878 territorial settlement by the Congress of Berlin following the Russo-Turkish War of 1877–78
1878 battle of Austro-Hungarian Campaing in Bosnia and Herzegovina