484day.year
King Huneric of the Vandals replaces Nicene bishops with Arian ones, and banishes some to Corsica.
In 484 AD, Vandal King Huneric deposed Nicene bishops and installed Arian clergy, exiling opponents to Corsica.
In 484 AD, Huneric, the Vandal king known for his Arian Christian beliefs, initiated a sweeping ecclesiastical purge in North Africa. He removed Nicene bishops from their sees and installed Arian clergy in their place. Many Nicene clerics faced harsh treatment and were forced into exile on Corsica. This act exacerbated tensions between differing Christian doctrines of the era and fueled religious conflict across the region. Huneric’s actions reflected the broader struggle between Arianism and Nicene orthodoxy in the late Roman world.
484
Huneric
Nicene
Arian
Corsica
1386day.year
King Charles III of Naples and Hungary is assassinated at Buda.
King Charles III of Naples and Hungary was assassinated by conspirators in Buda in 1386.
On February 24, 1386, Charles III, who ruled both Naples and Hungary, arrived in Buda to claim his Hungarian crown. His unpopularity among certain noble factions culminated in a deadly conspiracy. Conspirators led by Elizabeth of Bosnia and her supporters ambushed the king in the royal palace. Charles was stabbed multiple times and died from his wounds shortly after. His assassination plunged the kingdom into further instability and civil strife. The event underscored the fierce dynastic rivalries of medieval Europe.
1386
Charles III of Naples
Buda
1527day.year
Coronation of Ferdinand I as the king of Bohemia in Prague.
Ferdinand I was crowned King of Bohemia in Prague on February 24, 1527.
Ferdinand I, brother of Emperor Charles V and a member of the Habsburg dynasty, ascended the Bohemian throne in 1527. His coronation in Prague signified the consolidation of Habsburg authority in Central Europe. Ferdinand's reign aimed to stabilize the region and defend against Ottoman incursions. The ceremony followed Bohemian traditions and was attended by leading nobles and clergy. This event also cemented the close ties between the Bohemian crown and the Holy Roman Empire. Ferdinand would later become Holy Roman Emperor, shaping European politics for decades to come.
1527
Ferdinand I
Prague
1538day.year
Treaty of Nagyvárad between Holy Roman Emperor Ferdinand I and King John Zápolya of Hungary and Croatia.
The Treaty of Nagyvárad was signed in 1538 between Emperor Ferdinand I and King John Zápolya, dividing Hungary between them.
On February 24, 1538, Ferdinand I of Habsburg and John Zápolya, rival claimants to the Hungarian throne, met at Nagyvárad (now Oradea in Romania) to negotiate peace. The treaty recognized John Zápolya as the ruler of eastern Hungary, while Ferdinand secured western territories. They agreed that upon the death of one, the survivor would inherit the entire kingdom. This pragmatic compromise temporarily eased hostilities and Ottoman interference in Hungarian affairs. However, the arrangement ultimately failed to prevent further conflict. The treaty illustrated the complex political landscape of 16th-century Central Europe.
1538
Treaty of Nagyvárad
Ferdinand I
John Zápolya
1582day.year
With the papal bull Inter gravissimas, Pope Gregory XIII announces the Gregorian calendar.
Pope Gregory XIII issued the papal bull Inter gravissimas in 1582, announcing the adoption of the Gregorian calendar.
On February 24, 1582, Pope Gregory XIII promulgated the papal bull Inter gravissimas, authorizing a calendar reform to correct inaccuracies of the Julian system. The new Gregorian calendar adjusted leap year rules and omitted ten days to realign the calendar with the solar year. The reform aimed to restore the date of the spring equinox to March 21 for proper Easter calculation. Catholic countries adopted the new calendar immediately, while some Protestant and Orthodox states resisted for centuries. The Gregorian calendar eventually became the international standard for civil use. This historic change had profound effects on timekeeping, astronomy, and worldwide coordination of dates.
1582
papal bull
Inter gravissimas
Pope Gregory XIII
Gregorian calendar
1803day.year
In Marbury v. Madison, the Supreme Court of the United States establishes the principle of judicial review.
In 1803, the U.S. Supreme Court asserted its power of judicial review in Marbury v. Madison, shaping American constitutional law.
Marbury v. Madison was decided on 24 February 1803 by the Supreme Court of the United States.
Chief Justice John Marshall ruled that the Court has authority to review acts of Congress and determine their constitutionality.
This landmark decision established the principle of judicial review, empowering the judiciary as a co-equal branch of government.
By invalidating a portion of the Judiciary Act of 1789, the Court asserted its role in interpreting the Constitution.
Marbury v. Madison laid the foundation for the modern American legal system and reinforced the checks and balances among the branches of government.
1803
Marbury v. Madison
Supreme Court of the United States
judicial review
1812day.year
Treaty of Paris between Napoleon and Frederick William III of Prussia against Russia is signed.
In 1812, Napoleon and King Frederick William III of Prussia signed the Treaty of Paris, aligning Prussia with France against Russia.
On 24 February 1812, Emperor Napoleon I of France and King Frederick William III of Prussia concluded the Treaty of Paris.
Under terms negotiated in the aftermath of Prussia's defeat in the War of the Fourth Coalition, Prussia agreed to provide troops for Napoleon’s planned invasion of Russia.
The treaty bound Prussia as an allied force of the French Empire, effectively making it a junior partner in the Continental System.
While aimed at ensuring Prussia’s security, the agreement sowed discontent within the Prussian court and military.
This alliance preceded the French invasion of Russia later that year, which had profound consequences for both nations.
1812
Treaty of Paris
Napoleon
Frederick William III of Prussia
1821day.year
Final stage of the Mexican War of Independence from Spain with Plan of Iguala.
In 1821, the Plan of Iguala formalized Mexico’s independence from Spain and set the principles for the new nation.
On 24 February 1821, the Plan of Iguala, also known as the Plan of the Three Guarantees, was proclaimed in Iguala, Mexico.
Drafted by Agustín de Iturbide and Vicente Guerrero, the plan called for Mexican independence under a constitutional monarchy.
It guaranteed the primacy of the Roman Catholic Church, equality for Spaniards and Creoles, and the preservation of individual rights.
This agreement united insurgent and royalist forces and paved the way for the entry of the Army of the Three Guarantees into Mexico City in September.
The Plan of Iguala marked the final phase of the Mexican War of Independence and laid the foundations for the First Mexican Empire.
1821
Mexican War of Independence
Spain
Plan of Iguala
1831day.year
The Treaty of Dancing Rabbit Creek, the first removal treaty in accordance with the Indian Removal Act, is proclaimed. The Choctaws in Mississippi cede land east of the river in exchange for payment and land in the West.
In 1831, the Treaty of Dancing Rabbit Creek initiated the first major removal of Native Americans under the Indian Removal Act.
On 24 February 1831, the Treaty of Dancing Rabbit Creek was proclaimed between the United States government and the Choctaw Nation.
It was the first removal treaty enacted under the Indian Removal Act of 1830, whereby the Choctaws ceded their lands east of the Mississippi River.
In exchange, they received land in the newly established Indian Territory in present-day Oklahoma and financial compensation.
The removal displaced thousands of Choctaw people from their ancestral homelands and set a precedent for the forced relocations known as the Trail of Tears.
The treaty had profound social and cultural impacts on the Choctaw Nation and American Indian policy.
1831
Treaty of Dancing Rabbit Creek
Indian Removal Act
Choctaws
Mississippi
1848day.year
King Louis-Philippe of France abdicates the throne.
Amid the February Revolution, King Louis-Philippe of France abdicates, ending the July Monarchy.
Amid widespread discontent over economic hardship and political repression, King Louis-Philippe faced massive protests in Paris. On February 24, 1848, he formally abdicated the throne in an attempt to quell the February Revolution. His decision led to the proclamation of the French Second Republic. The overthrow marked the end of the July Monarchy that had been established in 1830. Louis-Philippe fled to England, altering the course of French governance and inspiring revolutionary movements across Europe.
1848
King
Louis-Philippe of France
1863day.year
Arizona is organized as a United States territory.
Arizona is officially organized as a U.S. territory, establishing formal governance in the Southwest.
On February 24, 1863, President Abraham Lincoln signed the Arizona Organic Act, creating the Arizona Territory. This legislation separated the western half of the New Mexico Territory, providing a territorial government and legal framework. The new territory faced challenges including frontier conflicts and infrastructure development. Its organized status paved the way for growth in mining and settlement. Arizona would go on to achieve statehood in 1912, shaping its unique cultural and economic identity.
1863
Arizona
United States territory
1868day.year
Andrew Johnson becomes the first President of the United States to be impeached by the United States House of Representatives. He is later acquitted in the Senate.
President Andrew Johnson is impeached by the House, becoming the first U.S. president to face impeachment proceedings.
On February 24, 1868, the U.S. House of Representatives approved articles of impeachment against President Andrew Johnson. The charges centered on his violation of the Tenure of Office Act by removing Secretary of War Edwin Stanton. The House debate reflected deep post-Civil War tensions between Johnson and Radical Republicans. Johnson's trial in the Senate ended in acquittal by a single vote, preserving his presidency. This historic first impeachment set a precedent for the balance of power between Congress and the executive branch.
1868
Andrew Johnson
President of the United States
impeached
United States House of Representatives
Senate