1900 events in history

Jan 2 American Statesman and diplomat John Hay announces the Open Door Policy to promote trade with China
Jan 5 Irish leader John Redmond calls for a revolt against British rule
Jan 6 Second Boer War: Having already sieged the fortress at Ladysmith, Boer forces attack it, but are driven back by British defenders
Jan 16 The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands
Jan 23 Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat
Jan 24 Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop
Jan 29 The American League is organized in Philadelphia with eight founding teams
Jan 31 Datu Muhammad Salleh is assassinated in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion
Feb 3 Governor of Kentucky William Goebel dies of wound sustained in an assassination attempt three days earlier in Frankfort, Kentucky
Feb 5 The United States and the United Kingdom sign a treaty for the Panama Canal
Feb 6 The international arbitration court at The Hague is created when the Senate of the Netherlands ratifies an 1899 peace conference decree
Feb 7 Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith
Feb 9 The Davis Cup competition is established
Feb 14 Second Boer War: In South Africa, 20,000 British troops invade the Orange Free State
Feb 18 Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg
Feb 23 Second Boer War: Boers and British troops fight in the Battle of Hart's Hill
Feb 27 Second Boer War: In South Africa, British military leaders receive an unconditional notice of surrender from Boer General Piet Cronje at the Battle of Paardeberg
Feb 27 Fußball-Club Bayern München is founded
Feb 27 The British Labour Party is founded
Feb 28 The Second Boer War: The 118-day "Siege of Ladysmith" is lifted
Mar 7 The German liner SS Kaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore
Mar 13 Second Boer War: British forces occupy Bloemfontein, Orange Free State
Mar 14 The Gold Standard Act is ratified, placing United States currency on the gold standard
Mar 16 Sir Arthur Evans purchased the land around the ruins of Knossos, the largest Bronze Age archaeological site on Crete
Mar 24 Mayor of New York City Robert Anderson Van Wyck breaks ground for a new underground "Rapid Transit Railroad" that would link Manhattan and Brooklyn
Apr 2 The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule
Apr 5 Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B
Apr 15 Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines
Apr 30 Hawaii becomes a territory of the United States, with Sanford B. Dole as governor
Apr 30 Casey Jones dies in a train wreck in Vaughan, Mississippi, while trying to make up time on the Cannonball Express
May 1 The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history
May 17 Second Boer War: British troops relieve Mafeking
May 18 The United Kingdom proclaims a protectorate over Tonga
May 23 American Civil War: Sergeant William Harvey Carney is awarded the Medal of Honor for his heroism in the Assault on the Battery Wagner in 1863
May 24 Second Boer War: The United Kingdom annexes the Orange Free State
May 26 Thousand Days' War: The Colombian Conservative Party turns the tide of war in their favor with victory against the Colombian Liberal Party in the Battle of Palonegro
May 28 Gare d'Orsay railway station is inaugurated in Paris
May 29 N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil
Jun 5 Second Boer War: British soldiers take Pretoria
Jun 9 Birsa Munda, an important figure in the Indian independence movement, dies in a British prison under mysterious circumstances
Jun 14 Hawaii becomes a United States territory
Jun 14 The Reichstag approves a second law that allows the expansion of the German navy
Jun 17 Boxer Rebellion: Allied Western and Japanese forces capture the Taku Forts in Tianjin, China
Jun 18 Empress Dowager Longyu of China orders all foreigners killed, including foreign diplomats and their families
Jun 20 Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China
Jun 20 Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return
Jun 21 Boxer Rebellion. China formally declares war on the United States, Britain, Germany, France and Japan, as an edict issued from the Empress Dowager Cixi
Jun 25 The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China
Jul 2 The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany
Jul 9 Boxer Rebellion: The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children