Thirty years: Did you mean...?

Frederick II of Prussia (1712-1786), better known as Frederick the Great, was one of the most consequential rulers of 18th-century Europe. A scion of the House of Hohenzollern, he came to power in 1740...

Edward III of England reigned as king from 1327 to 1377. Succeeding his father Edward II of England (r. 1307-1327) following his enforced abdication and then murder, Edward III would take revenge on his father's enemies, who...

Agriculture arose independently at several locations across the world, beginning about 12,000 years ago. The first crops and livestock were domesticated in six rather diffuse areas including the Near East, China, Southeast...

The term “Athenian Calendar” (also called the “Attic Calendar”) has become somewhat of a misnomer, since Ancient Athenians never really used just one method to reckon the passage of time. Athenians, especially from the 3rd...

An ice age is a period in which the earth's climate is colder than normal, with ice sheets capping the poles and glaciers dominating higher altitudes. Within an ice age, there are varying pulses of colder and warmer climatic conditions...

The Battle of Agincourt on 25 October 1415 saw Henry V of England (r. 1413-1422) defeat an overwhelmingly larger French army during the Hundred Year's War (1337-1453). The English won thanks to the superior longbow, field position...

Eastman's biography of Red Cloud (l. 1822-1909) is the first narrative of his Indian Heroes and Great Chieftains (1916), and it sets the tone for those that follow, including the pieces on Sitting Bull and Crazy Horse...

Between 1200 and 1450 CE, no single power dominated the world. Instead, a number of powerful civilizations developed in parallel: the Song Dynasty in China, ruled after 1279 by the Mongols; the...

The Protestant Reformation (1517-1648) was one of the most significant cultural, political, and religious events in the history of Europe and helped shape the modern world. It was a complex event spanning...

On 19 January 1861, at a state convention held in Milledgeville, Georgia voted to secede from the United States of America, becoming the fifth state to do so. Ten days later - 29 January -...