1901January 1901 January 1 The British colonies of New South Wales, Queensland, South Australia, Tasmania, Victoria and Western Australia federate as the Commonwealth of Australia; Edmund Barton becomes the first Prime Minister of Australia. Nigeria becomes a British protectorate. January 9 – Lord Kitchener reports that Christiaan de Wet has shot one of the "peace" envoys, and flogged two more, who had gone to his commando to ask the Burgher citizens of South Africa to halt fighting.
1931January 1931 January 2 – South Dakota native Ernest Lawrence invents the cyclotron, used to accelerate particles to study nuclear physics. January 4 – German pilot Elly Beinhorn begins her flight to Africa. January 22 – Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia. January 25 – Mohandas Gandhi is again released from imprisonment in India. January 27 – Pierre Laval forms a government in France.
1946January 1946 January 6 – The first general election ever in Vietnam is held. January 7 – The Allies of World War II recognize the Austrian republic with its 1937 borders, and divide the country into four occupation zones. January 10 The first meeting of the United Nations is held, at Methodist Central Hall Westminster in London. Project Diana bounces radar waves off the Moon, measuring the exact distance between the Earth and the Moon, and proves that communication is possible between Earth and outer space, effectively opening the Space Age.
1900As of March 1 (O.S. February 17), when the Julian calendar acknowledged a leap day and the Gregorian calendar did not, the Julian calendar fell one day further behind, bringing the difference to 13 days until February 28 (O.S. February 15), 2100. The year 1900 also marked the Year of the Rat on the Chinese calendar. January 1900 January 2 – U.S. Secretary of State John Hay announces the Open Door Policy, to promote American trade with China. January 3 – The United States Census estimates the country's population to be about 70 million people.
1974Major events in 1974 include the aftermath of the 1973 oil crisis and the resignation of United States President Richard Nixon following the Watergate scandal. In the Middle East, the aftermath of the 1973 Yom Kippur War determined politics; following Israeli Prime Minister Golda Meir's resignation in response to high Israeli casualties, she was succeeded by Yitzhak Rabin.
March 271309 – Pope Clement V imposes excommunication and interdiction on Venice, and a general prohibition of all commercial intercourse with Venice, which had seized Ferrara, a papal fiefdom. 1329 – Pope John XXII issues his In Agro Dominico condemning some writings of Meister Eckhart as heretical. 1513 – Spanish explorer Juan Ponce de León reaches the northern end of The Bahamas on his first voyage to Florida. 1625 – Charles I becomes King of England, Scotland and Ireland as well as claiming the title King of France.
19451945 marked the end of World War II and the fall of Nazi Germany and the Empire of Japan. It is also the year concentration camps were liberated and the only year in which atomic weapons have been used in combat. Below, the events of World War II have the "WWII" prefix. January 1945 January 1 – WWII: Germany begins Operation Bodenplatte, an attempt by the Luftwaffe to cripple Allied air forces in the Low Countries. Chenogne massacre: German prisoners are allegedly killed by American forces near the village of Chenogne, Belgium.
1912This year is notable for the sinking of the Titanic on April 15, 1912. January 1912 January 1 – The Republic of China is established. January 5 – The Prague Conference (6th All-Russian Conference of the Russian Social Democratic Labour Party) opens. January 6 German geophysicist Alfred Wegener first presents his theory of continental drift. New Mexico become the 47th U.S. State. January 8 – The African National Congress is founded as the South African Native National Congress, at the Waaihoek Wesleyan Church in Bloemfontein, to promote improved rights for black South Africans, with John Langalibalele Dube as its first president.
1917Below, the events of World War I have the "WWI" prefix. January 1917 January 9 – WWI – Battle of Rafa: The last substantial Ottoman Army garrison on the Sinai Peninsula is captured by the Egyptian Expeditionary Force's Desert Column. January 10 – Imperial Trans-Antarctic Expedition: Seven survivors of the Ross Sea party were rescued after being stranded for several months. January 11 – Unknown saboteurs set off the Kingsland Explosion at Kingsland (modern-day Lyndhurst, New Jersey), one of the events leading to United States involvement in WWI.
1906January 12 – Persian Constitutional Revolution: A nationalistic coalition of merchants, religious leaders and intellectuals in Persia forces the shah Mozaffar ad-Din Shah Qajar to grant a constitution, and establish a national assembly, the Majlis. January 16–April 7 – The Algeciras Conference convenes, to resolve the First Moroccan Crisis between France and Germany. January 22 – The strikes a reef off Vancouver Island, Canada, killing over 100 (officially 136) in the ensuing disaster.