About the neighborhood
This is a timeline of the 20th century.
1900s
1901
January 1: The Australian colonies federate.
January 22: Edward VII became King of England and Emperor of India after Queen Victoria's death.
March 2: The Platt Amendment provides for Cuban independence in exchange for the withdrawal of American troops.
June: Emily Hobhouse reports on the poor conditions in 45 British internment camps for Boer women and children in South Africa.
September 6: The assassination of William McKinley ushered in office Vice President Theodore Roosevelt after McKinley's death on September 14.
September 7: The Eight-Nation Alliance defeats the Boxer Rebellion, and imposes heavy financial penalties on China.
December 10: First Nobel Prizes awarded.
December 12: Guglielmo Marconi received the first transatlantic radio signal.
1902
January 13: The Unification of Saudi Arabia begins.
May 20: Cuba given independence by the United States.
May 31: Second Boer War ends in British victory.
July 12: Arthur Balfour becomes Prime Minister of the United Kingdom.
July 17: Willis Carrier invents the first modern electrical air conditioning unit.
Venezuelan crisis of 1902–1903, in which Britain, Germany and Italy impose a naval blockade on Venezuela in order to enforce collection of outstanding financial claims.
1903
February 15: The first teddy bear is invented.
June 11: King Alexander I of Serbia and his wife Queen Draga are assassinated in a military coup.
July 1: The first Tour de France is held.
July–August: In Russia the Bolsheviks and the Mensheviks form from the breakup of the Russian Social Democratic Labour Party.
August 4: Pius X becomes Pope.
November 18: Independence of Panama, the Hay–Bunau-Varilla Treaty is signed by the United States and Panama.
December 17: First controlled heavier-than-air flight of the Wright brothers.
The Ottoman Empire and the German Empire sign an agreement to build the Berlin–Baghdad railway.
1904
February 8: A Japanese surprise attack on Port Arthur (Lushun) starts the Russo-Japanese War.
April 8: Entente Cordiale signed between Britain and France.
May: U.S. begins construction of the Panama Canal and eradication of yellow fever.
June 21: Trans-Siberian Railway is completed.
Herero and Nama genocide, the first genocide of the 20th century, begins in German South West Africa.
Roger Casement publishes his account of Belgian atrocities in the Congo Free State.
1905
January 22: The Revolution of 1905 in Russia erupts.
March 31: The First Moroccan Crisis begins, going until April 1906.
June 7: The Norwegian Parliament declares the union with Sweden dissolved, and Norway achieves full independence.
September 5: The Russo-Japanese War ends in Japanese victory.
September 26: Albert Einstein's formulation of special relativity.
October 16: The British Indian Province of Bengal, partitioned by the Viceroy of India, Lord Curzon, despite strong opposition.
December 5: Liberal Henry Campbell-Bannerman becomes Prime Minister of the United Kingdom.
Schlieffen Plan proposed in Berlin to defeat France.
The Persian Constitutional Revolution begins.
1906
April 18: An earthquake in San Francisco, California, magnitude 7.9, kills 3,000.
July 13: Alfred Dreyfus is exonerated and reinstated as a major in the French Army; the Dreyfus affair ends.
August 16: An earthquake in Valparaíso, Chile, magnitude 8.2, kills 20,000.
September 28: The US begins the Second Occupation of Cuba.
October 23: Brazilian inventor Alberto Santos-Dumont takes off and flies his 14-bis to a crowd in Paris.
December 30: The Muslim League is formed by Nawab Salimullah Khan of Dacca.
The Stolypin reform in Russia creates a new class of affluent kulaks.
1907
February–April: A peasants' revolt in Romania kills roughly 11,000.
March 15–16: Elections to the new Parliament of Finland are the first in the world with woman candidates, as well as the first elections in Europe where universal suffrage is applied.
July 24: Japan–Korea Treaty of 1907.
August 31: The Anglo-Russian Convention bring an end to the Great Game in Central Asia.
The Indian National Congress splits into two factions at its Surat session, presided by Rash Behari Bose.
Persian Constitutional Revolution ends with the establishment of a parliament.
Bakelite, the world's first fully synthetic plastic, invented in New York by Leo Baekeland, who coins the term "plastics".
1908
April 8: Liberal H. H. Asquith becomes Prime Minister of the United Kingdom.
May 26: First commercial Middle Eastern oilfield established, at Masjed Soleyman in southwest Persia.
June 30: The Tunguska event devastates thousands of square kilometres of Siberia.
July: Young Turk Revolution in the Ottoman Empire.
July 26: Founding of the Bureau of Investigation (BOI)
October 1: The Ford Motor Company invents the Model T.
early October: Austria-Hungary annexes Bosnia-Herzegovina, triggering the Bosnian Crisis.
October 5: Bulgarian Declaration of Independence.
December 2: Puyi, the last Emperor of China, assumes the throne.
December 28: The 1908 Messina earthquake in southern Italy, magnitude 7.1, kills 70,000 people.
Herero and Nama genocide ends.
First commercial radio transmissions.
The coldest year since 1880 according to NASA.
1909
March 4: William Howard Taft is inaugurated as President of the United States; deep divisions in his Republican Party over tariffs.
March 10: Anglo-Siamese Treaty of 1909 signed (effective on July 9).
March 12: Indian Councils Act passed.
April 6: Robert Peary claims to have reached the North Pole though the claim is subsequently heavily contested.
April 13: A countercoup fails in the Ottoman Empire.
July 16: A revolution forces Mohammad Ali Shah Qajar, Persian Shah of the Qajar dynasty to abdicate in favor of his son Ahmad Shah Qajar.
Japan and China sign the Jiandao/Gando Treaty.
United States troops leave Cuba.
1910s
1910
February 8: Boy Scouts of America is founded.
April: Halley's Comet returns.
May–July: Albanian revolt of 1910.
May 6: George V becomes King of the United Kingdom and the British Dominions and Emperor of India upon the death of Edward VII.
May 31: Union of South Africa is created.
August 28: Kingdom of Montenegro is proclaimed independent.
August 29: Imperial Japan annexes Korea.
October 5: The 5 October 1910 revolution in Portugal and proclamation of the First Portuguese Republic.
November 20: Beginning of the Mexican Revolution (Plan of San Luis Potosí).
1911
January 18: Eugene Burton Ely lands on the deck of the USS Pennsylvania stationed in San Francisco harbor, marking the first time an aircraft lands on a ship.
March 25: Triangle Shirtwaist Factory fire in New York City results in the deaths of 146 workers and leads to sweeping workplace safety reforms.
April–November: Second Moroccan Crisis.
September 29: The Italo-Turkish war which led to the capture of Libya by Italy, begins.
October 10: 1911 Revolution, which overthrew the Qing dynasty of China, begins.
November 3: Swiss race car driver and automotive engineer Louis Chevrolet co-founds the Chevrolet Motor Company in Detroit with his brother Arthur Chevrolet, William C. Durant and others.
December 12: New Delhi becomes the capital of British India.
December 14: Roald Amundsen first reaches the South Pole.
Ernest Rutherford identifies the atomic nucleus.
1912
February 8: The African National Congress is founded.
February 12: End of the Chinese Empire. Republic of China established.
February 14: Arizona becomes the last state to be admitted to the continental Union.
late March: Captain Scott and his companions die in a blizzard on their way back from the South Pole.
March 30: Morocco becomes a protectorate of France.
April 15: Sinking of the RMS Titanic.
July 30: Emperor Meiji dies, ending the Meiji era; his son, the Emperor Taishō, becomes Emperor of Japan.
August 25: The Kuomintang, the Chinese nationalist party, is founded.
October 8: The First Balkan War begins.
Banana Wars: United States occupation of Nicaragua begins.
1913
January 23: In the 1913 Ottoman coup d'état, Ismail Enver comes to power.
February 9–19: Ten Tragic Days in Mexico City.
March 4: Woodrow Wilson is inaugurated as President of the United States.
May 29: Igor Stravinsky's The Rite of Spring infamously premiers in Paris which causes a riot.
May 30: Treaty of London.
June–August: Second Balkan War.
August 10: Treaty of Bucharest.
October 7: Ford Motor Company introduces the first moving assembly line.
December 23: The Federal Reserve System is created.
Yuan Shikai uses military force to dissolve China's parliament and rules as a dictator.
Niels Bohr formulates the first cohesive model of the atomic nucleus, and in the process paves the way to quantum mechanics.
1914
June 28: Gavrilo Princip assassinates Archduke Franz Ferdinand of Austria in Sarajevo, triggering the start of World War I that day.
August 15: Panama Canal opens.
August 26–30: Battle of Tannenberg.
September 1: Martha, last known passenger pigeon, dies.
September 3: Benedict XV becomes Pope.
September 6–12: First Battle of the Marne.
September–October: The Race to the Sea leaves Germany and the Allies entrenched along the Western Front.
December 19: The United Kingdom establishes the Sultanate of Egypt as a protectorate.
December 25: The Christmas truce is celebrated by the Germans and the British along the Western Front.
1915
April 22: Second Battle of Ypres begins, first widespread use of poison gas.
April 24: The deportation of Armenian leaders and notables in Constantinople signals the onset of the Armenian genocide.
May 7: Sinking of the RMS Lusitania.
July 28: In the Banana Wars, the United States occupation of Haiti begins.
The first large scale use of poison gas by both sides in World War I occurs, first by the Germans at the Battle of Humin-Bolimów on the eastern front, and at the Second Battle of Ypres on the western front, and then by the British at the Battle of Loos.
1916
January 9: The Allies' Gallipoli campaign ends in failure; heavy losses of Australian troops.
February – December: Battle of Verdun.
March 7: Bayerische Flugzeugwerke, later to become BMW, is founded in Germany.
April 24–30: Easter Rising in Ireland.
April 30: The first nationwide implementation of daylight saving time in the German Empire and Austria-Hungary.
June–September: Brusilov offensive by Russia.
June 6: The Warlord Era begins in China after the death of Yuan Shikai.
June 10: The Arab Revolt begins.
July–November: Battle of the Somme on Western Front; massive casualties.
September 15–22: First use of tanks at the Battle of Flers–Courcelette.
December: The Pact is agreed upon by both the Congress and the Muslim League at the Indian city of Lucknow.
December 6: Liberal David Lloyd George becomes Prime Minister of the United Kingdom.
December 30: Grigori Rasputin is assassinated in Russia.
Market Square, one of the earliest shopping malls, opens in the Chicago metropolitan area.
1917
March 8: Russian Revolution ends the Russian Empire; beginning of Russian Civil War.
April 6: USA joins the Entente for the last 17 months of World War I.
May–October: Apparitions of Our Lady of the Rosary in Fátima, Portugal.
June 4: The first Pulitzer Prizes announced.
July–November: Battle of Passchendaele.
October–November: Battle of Caporetto.
November 1–2: The Third Battle of Gaza ends in British victory.
November 7 (O.S. October 25): October Revolution in the Russian Republic.
November 8: The Ukrainian–Soviet War begins.
November 26: The National Hockey League is formed in Montreal, Canada.
December 6: Independence of Finland.
The first known sale of Girl Scout Cookies begins.
1918
January–May: Finnish Civil War.
January 22: Ukraine declares independence from Russia.
February 16: The Council of Lithuania unanimously adopts the Act of Independence, declaring Lithuania an independent country.
March–July: The German spring offensive.
March 11: Beginning of the Spanish flu pandemic, which lasts until April 1920 and kills tens of millions.
March 25: Belarus declares independence from Russia.
March 30: The Armenian–Azerbaijani War begins.
May 28: Azerbaijan Democratic Republic declared.
July 4: Mehmed VI becomes the last Sultan of the Ottoman Empire and the last Caliph.
July 16–17: Assassination of Tsar Nicholas II and his family.
August 8–12: Battle of Amiens.
August–November: The Hundred Days Offensive sends Germany into defeat.
October: the State of Slovenes, Croats and Serbs is established.
October 29: German Revolution begins.
October 30: The Mutawakkilite Kingdom of Yemen founded.
The Partition of the Ottoman Empire begins.
November 1: Independence declared in the West Ukrainian People's Republic.
The Polish–Ukrainian War begins.
November 9: Abdication of Wilhelm II.
November 11: The Armistice of 11 November 1918 ends World War I.
Poland declares independence from Russia.
December 1: The Kingdom of Iceland, a personal union with Denmark, is formed.
The British occupy Palestine.
1919
Paris Peace Conference writes Treaty of Versailles that punishes Germany.
January 21: The First Red Scare in the United States. Irish War of Independence begins.
February 14: Polish–Soviet War begins.
March 2: Communist International established in the Kremlin to coordinate Communist parties worldwide.
April 11: The International Labour Organization is established.
April 13: The Jallianwala Bagh massacre in northern India: Acting Brigadier-General Reginald Dyer orders troops of the British Indian Army to fire their rifles into a crowd of unarmed Indian civilians, killing from 379 to 1,000 people and injuring another 1,500.
May 19: Turkish War of Independence begins.
June 28: The Treaty of Versailles redraws European borders.
July: The 1919 Egyptian revolution erupts.
July 18: End of Polish–Ukrainian War.
August 11: German Revolution ends with the collapse of the German Empire and the establishment of the Weimar Republic.
November 19: Release date of Feline Follies, the first appearance of Felix the Cat (then known as Master Tom).
First experimental evidence for the General theory of relativity obtained by Arthur Eddington.
Ernest Rutherford discovers the proton.
1920s
1920
January 10: League of Nations founded.
January 17: Prohibition in the United States begins.
February 2: Victory for Estonia in the Estonian War of Independence.
April 25: Mandatory Palestine established.
April 27–28: Red Army invasion of Azerbaijan and Armenia ends the Armenian–Azerbaijani War and concludes with their incorporation into the Soviet Union.
September 5: Mahatma Gandhi launches Non-cooperation movement.
December 1: Mexican Revolution ends.
Greece restores its monarchy after a referendum.
1921
January 25: Premiere of the science-fiction play R.U.R. (Rossum's Universal Robots), in which the word "robot" was first used.
Encyclopedic content adapted from the Wikipedia article on Saint-Cyprien, used under CC BY-SA 4.0.
