Papal States: Did you mean...?

The Diet of Worms (January-May 1521) was the assembly convened by Charles V, Holy Roman Emperor to address, among other issues, the works of the reformer Martin Luther (l. 1483-1546) who openly criticized the Church. Luther was...

The Fourteenth Amendment is one of the most important and consequential additions to the United States Constitution. Ratified in 1868, it defines American citizenship as belonging to "all persons...

The United States Constitution, drafted in Philadelphia in 1787, established the legal and political framework of the American republic, replacing the Articles of Confederation (1781). Ratified in 1788 and implemented...

A map of the United States, showing each of its states, published by D.G. Beers & Co. in 1874. From the Lionel Pincus and Princess Firyal Map Division, The New York Public Library.

There was actually only one cause for the American Civil War: slavery. All the events leading to the Civil War, understood as steps moving steadily up the conflict, had slavery as...

The United States remained neutral in the first three years of the First World War (1914-18) but did finally join the conflict at the end of 1917 following the threat of unrestricted submarine...

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 -...

The American Civil War (1861-1865) was the pivotal event in United States history and the largest armed conflict in the Western world following the end of the Napoleonic Wars (1815) and prior to...

The Warring States period (c. 475–221 BCE) represents the final and most transformative phase of the Eastern Zhou dynasty (770–256 BCE), marked by political fragmentation, sustained interstate warfare...

The Unam Sanctam (1302) was a papal bull issued by Pope Boniface VIII (served 1294-1303) requiring the complete submission of all people, including kings, to the authority and dictates of the pope...