Frederick I: Did you mean...?

The German Crusade of 1197 CE, also known as the 'Emperor's Crusade', was led by the Holy Roman Emperor Henry VI (r. 1191-1197 CE). Although the emperor died on his way east, his army did capture Beirut from the forces of the Ayyubid dynasty...

The medieval indulgence was a writ offered by the Church, for money, guaranteeing the remission of sin, and its abuse was the spark that inspired Martin Luther's 95 Theses. Luther (l. 1483-1546) claimed the sale of indulgences was unbiblical...

William "Box" Peel Jones was an enslaved African American who, in 1859, was shipped in a box from an unknown location to the home of the abolitionist William Still (1819-1902) in Philadelphia and then traveled on, with assistance from the...

Although John Lloyd Stephens and Frederick Catherwood are consistently credited with the `discovery' of the Maya Civilization, there were many who preceded them who sparked their interest in making their famous travels through Mesoamerica...

The Vindication and Refutation of Thomas Müntzer (l. c. 1489-1525) is a 1524 open letter to Jesus Christ, Martin Luther (l. 1483-1546), and the Christian community charging Luther with hypocrisy, betraying his original vision to win support...

The Grand Embassy was the name given to the long Western European tour that Tsar Peter I of Russia (aka Peter the Great, r. 1682-1725) undertook during 1697-1698. Peter was joined by hundreds of people, including noblemen, his friends, volunteers...

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...

Henry Box Brown (l. c. 1815-1897) was an enslaved African American who became famous as "the man who mailed himself to freedom" after he had himself shipped in a box from Richmond, Virginia, to abolitionists in Philadelphia, Pennsylvania...

Meeting of European rulers at the Pillnitz Conference, famous for the Declaration of Pillnitz, which was issued on 27 August 1791 and threatened Revolutionary France with invasion. Depicted in the center are Leopold II, Holy Roman Emperor...

Bleeding Kansas' was a term coined by the New York Tribune in 1856, referring to the escalating hostilities in the Kansas Territory between pro-slavery activists and anti-slavery 'free staters' following the passage of the Kansas-Nebraska...