The year of the four emperors: Did you mean...?

Uprising of 1 Prairial Year III (20 May 1795) against the policies of the Thermidorian Reaction during the later stages of the French Revolution (1789-1799). Here, the insurrectionists wave the severed head of Jean-Bertrand Féraud in the...

Revolt of 13 Vendémiaire Year IV (5 October 1795), the battle between royalist insurrectionists and French Republican soldiers under General Napoleon Bonaparte is taken to the Saint-Roch church. Image by Charles Monnet.

A newspaper clipping from the Boston Gazette reporting on the funeral of four of the victims of the Boston Massacre, represented by an image of four coffins, each bearing the initials of a victim. These names from left to right include: Samuel...

This map depicts the boundaries of all major civilizations in East Asia at the beginning of the Three Kingdoms Period of China, with italics indicating nomadic bands and other tribal societies. Following the collapse of Han Dynasty in 220...

This map shows the boundaries of all major civilizations in East Asia at the beginning of the first millennium, with italics indicating nomadic bands and other tribal societies.

This fragment of a clay tablet mentions certain formulas of naming years depending on major historical events. From Mesopotamia, modern-day Iraq. Early dynastic period, 2800-2300 BCE. The Sulaimaniya Museum, Iraq.

The Virgin of Guadalupe with the Four Apparitions, painting by Nicolás Enríquez, Mexico, 1773. This image depicts Our Lady of Guadalupe, an image of the Virgin Mary specific to Mexico/New Spain and her four apparitions in December of 1531...

This map illustrates the four major khanates that emerged from the Mongol Empire in the early 14th century, following the fragmentation of the vast domain once ruled by Genghis Khan (circa 1162 to 1227, reign 1206 to 1227). Although no longer...

A map of the four Khanates of the Mongol Empire, after its division in 1259 CE.

This map illustrates the four voyages of Christopher Columbus between 1492 and 1504, commissioned by Queen Isabella I of Castile (reign 1474–1504) and King Ferdinand II of Aragon (reign 1479–1516). Overlaid on the prevailing winds and currents...