Sultanate of Rum: Did you mean...?

The transatlantic slave trade (also given as the Atlantic slave trade, circa 1492 to 1860) was the practice of enslaving the citizens of African states and transporting them across the Atlantic Ocean to the "New World" of the Americas. Although...

Matthew Flinders (1774-1814) was an English navigator and hydrographer. He was the first person to map the coastal outline of Australia in 1801-1803, following his circumnavigation of the 7.692 million square kilometres (2.96 million square...

The Byzantine Empire existed from 330 to 1453. It is often called the Eastern Roman Empire or simply Byzantium. The Byzantine capital was founded at Constantinople by Constantine I (r. 306-337). The Byzantine Empire varied in size over the...

The First Crusade (1095-1102) was a military campaign by western European forces to recapture the city of Jerusalem and the Holy Land from Muslim control. Conceived by Pope Urban II following an appeal from the Byzantine emperor Alexios I...

Osman I, also known as Osman Gazi (c. 1258 - c. 1323 CE), was the founder and first Sultan of the Ottoman Beylik, which would rise to eventually become the Ottoman Empire. He was the ruler of a small Turkic principality among many in the...

Edessa (modern Urfa), located today in south-east Turkey but once part of upper Mesopotamia on the frontier of the Syrian desert, was an important city throughout antiquity and the Middle Ages. A city within the Seleucid Empire, then capital...

The Kingdom of Jerusalem was a state created in 1099 CE by Crusaders and western settlers after the First Crusade (1095-1102 CE). With Jerusalem as its capital, the kingdom was the most important of the four Crusader States in the Middle...

The Council of Clermont in central France was held in November 1095 and witnessed Pope Urban II's (r. 1088-1099) historic call for the First Crusade (1095-1102) to capture Jerusalem for Christendom from its Muslim occupiers. The Pope's speech...

The Crusader States, collectively known as Outremer (from Old French outre-mer, “overseas”), were a group of Latin Christian polities established in the eastern Mediterranean following the First Crusade (1096–1099). Emerging from the conquest...

Alexios I Komnenos (Alexius Comnenus) was emperor of the Byzantine Empire from 1081 to 1118 CE. Regarded as one of the great Byzantine rulers, Alexios defeated the Normans, the Pechenegs, and, with the help of the First Crusaders, the Seljuks...