* Gene Austin ( 1900 – 1972 ), American singer

* 1900 – Leo Robin, American songwriter and composer ( d. 1984 )

* 1900 – Philippine – American War: Filipino guerrillas launch a surprise attack on U. S. infantry and begin a four-day siege of Catubig, Philippines.

* 1900 – Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.

* 1900 – Casey Jones dies in a train wreck in Vaughn, Mississippi, while trying to make up time on the Cannonball Express.

* 1900 – David Manners, Canadian-American actor ( d. 1998 )

* 1844 – Alfred, Duke of Saxe-Coburg and Gotha ( d. 1900 )

* 1900 – Cecil Howard Green, English-American geophysicist ( d. 2003 )

* 1820 – George Grove, English historian ( d. 1900 )

* 1867 – Ernest Dowson, English poet ( d. 1900 )

* 1984 – Elizabeth Goudge, English writer ( b. 1900 )

* 1900 – Otto Nothling, Australian cricketer and rugby player ( d. 1965 )

* 1900 – The Firestone Tire and Rubber Company is founded.

* 1900 – Ernie Pyle, American journalist ( d. 1945 )

* 1900 – John T. Scopes, American teacher ( d. 1970 )

* 1900 – The Eight-Nation Alliance occupies Beijing, China, in a campaign to end the bloody Boxer Rebellion in China.

* 1900 – Estelle Brody, American actress ( d. 1995 )

* 1900 – The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British.

* 1900 – Olga Baclanova, Russian actress ( d. 1974 )

* 1900 – Colleen Moore, American actress ( d. 1988 )

* 1900 – Gontran de Poncins, French writer and adventurer ( d. 1962 )

* 1900 – Gilbert Ryle, English philosopher ( d. 1976 )

* 1840 – Ferdinand Hamer, Dutch missionary and bishop ( d. 1900 )

* 1900 – Hans Adolf Krebs, German physician and biochemist, Nobel Prize laureate ( d. 1981 )

* Bloody Sunday ( 1900 ), a day of high casualties in the Second Boer War, South Africa

Second Ellis Island Immigration Station, opened on December 17, 1900 ( photo 1905 )

* 1900 – Second Boer War: In South Africa, 20, 000 British troops invade the Orange Free State.

* 1900 – Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.

* 1900 – 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.

* 1900 – The Second Boer War: The 118-day " Siege of Ladysmith " is lifted.

* 1900 – Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg.

Paris was the venue for the Second International Congress of Mathematicians in 1900.

Prewar ' epistemic communities ,' such as the International Association for Labour Legislation ( IALL ), founded in 1900, and political networks, such as the Socialist Second International, were a decisive factor in the institutionalization of international labour politics.

* 1900 – Second Boer War: British soldiers take Pretoria.

* 1900 – Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.

* 1900 – The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces during the Second Boer War resulted in a British defeat.

Jerusalem Day marks the 1967 reunification of Jerusalem and The Temple Mount under Jewish rule during the Six-Day War almost 1900 years after the destruction of the Second Temple in Jerusalem.

* 1900 – Second Boer War: The United Kingdom annexes the Orange Free State.

These " modernist " landmarks include the atonal ending of Arnold Schoenberg's Second String Quartet in 1908, the expressionist paintings of Wassily Kandinsky starting in 1903 and culminating with his first abstract painting and the founding of the Blue Rider group in Munich in 1911, and the rise of fauvism and the inventions of cubism from the studios of Henri Matisse, Pablo Picasso, Georges Braque and others in the years between 1900 and 1910.

* 1900 – Second Boer War: British troops relieve Mafeking.

In 1900 the ZAR was annexed by the United Kingdom during the Second Boer War although the official surrender of the territory only took place at the end of the war, on 31 May 1902.

These two states would survive until their annexation in 1900 by United Kingdom during the Second Boer War.

Second Boer War: Boers at Battle of Spion Kop | Spion Kop, 1900

The strong farmer representation in the Second Chamber of the Riksdag maintained a conservative view, but their decline after 1900 gradually ended opposition to full suffrage.

Romesh Chunder Dutt argued as early as 1900, and present-day scholars such as Amartya Sen agree, that some historic famines were a product of both uneven rainfall and British economic and administrative policies, which since 1857 had led to the seizure and conversion of local farmland to foreign-owned plantations, restrictions on internal trade, heavy taxation of Indian citizens to support British expeditions in Afghanistan ( see The Second Anglo-Afghan War ), inflationary measures that increased the price of food, and substantial exports of staple crops from India to Britain.

In 1900 John Fowler & Co. provided armoured road trains for use by the British forces in the Second Boer War.

In the 20th century, the race was run on the first Wednesday in June from 1900 until 1995 apart from: 1915 to 1918, ( during the First World War ) when it was on a Tuesday ; during the Second World War, from 1942 until 1945 the race was run on a Saturday as it was in the post war years of 1947 to 1950 and again in 1953.