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Charles V, Holy Roman Emperor (24 February 1500 to 21 September 1558) reigned from 1519 until his abdication in 1556 and was one of the most powerful rulers in the history of the Habsburg dynasty. Through a series of...

Mary I of England reigned as queen from 1553 to 1558. The eldest daughter of Henry VIII of England (r. 1509-1547) with Catherine of Aragon (1485-1536), she restored Catholicism in England while her persecution of Protestants...

Ivan III of Russia (Ivan the Great) was the Grand Prince of Moscow and Russia from 1462 to 1505. Ivan III was born in 1440 to Grand Prince Vasily II of Moscow (r. 1425-1462) and his wife, Maria Borovsk (l. c. 1420-1485). He...

The Assassins (aka Nizari Ismailis), were a heretical group of Shiite Muslims who were powerful in Persia and Syria from the 11th century CE until their defeat at the hands of the Mongols in the mid-13th century CE. Secure in their...

James Buchanan (1791-1868) was an American politician who served as the fifteenth president of the United States. He took office during a time of great crisis, when the country was divided along sectional...

Heraclius (Herakleios) was emperor of the Byzantine Empire from 610 to 641 CE. He crushed the Persian empire and returned the looted True Cross to Jerusalem, but the second half of his reign was beset by intrigues and ecclesiastical...

The Constitutional Convention was held at Independence Hall in Philadelphia, Pennsylvania, from 25 May to 17 September 1787. Spurred on by economic troubles left over from the American Revolution and compounded by the...

The Despotate of Epirus was one of the successor states of the Byzantine Empire when it disintegrated following the Fourth Crusade's capture of Constantinople in 1204 CE. It was originally the most successful of those successor...

Antoine Pierre Joseph Marie Barnave (1761-1793) was a French lawyer, politician, and one of the most influential orators of the early stage of the French Revolution (1789-1799). He is notable for being a champion of constitutional...

Chlothar I (l. c. 498-561) was a Merovingian king of the Franks, the second to rule over a unified Frankish kingdom after his father, Clovis I (l. c. 466-511). When Clovis died in 511, his kingdom was divided up between his four sons...