1899January 1 Spanish rule ends in Cuba, concluding 400 years of the Spanish Empire in the Americas. Queens and Staten Island become administratively part of New York City. January 2 Bolivia sets up a customs office in Puerto Alonso, leading to the Brazilian settlers there to declare the Republic of Acre in a revolt against Bolivian authorities. The first part of the Jakarta Kota–Anyer Kidul railway on the island of Java is opened between Batavia Zuid (Jakarta Kota) and Tangerang.
1886January 1 – Upper Burma is formally annexed to British Burma, following its conquest in the Third Anglo-Burmese War of November 1885. January 5–9 – Robert Louis Stevenson's novella Strange Case of Dr Jekyll and Mr Hyde is published in New York and London. January 16 – A resolution is passed in the German Parliament to condemn the Prussian deportations, the politically motivated mass expulsion of ethnic Poles and Jews from Prussia, initiated by Otto von Bismarck.
1905As the second year of the massive Russo-Japanese War begins, more than 100,000 die in the largest world battles of that era, and the war chaos leads to the 1905 Russian Revolution against Nicholas II of Russia (Shostakovich's 11th Symphony is subtitled The Year 1905 to commemorate this) and the start of Revolution in the Kingdom of Poland. Canada and the U.S. expand west, with the Alberta and Saskatchewan provinces and the founding of Las Vegas.
1903January 1903 January 1 – Edward VII is proclaimed Emperor of India. January 4 – Topsy, a female Asian circus elephant, is killed by electrocution at Luna Park, Coney Island, New York City. January 19 – The first west–east transatlantic radio broadcast is made from the United States to England (the first east–west broadcast having been made in 1901). January 17 – 13 days after Topsy's death, the Edison Manufacturing Company released the short, black-and-white, silent documentary film Electrocuting an Elephant, showing the footage of Topsy's electrocution.
1910January 1910 January 6 – Abé people in the French West Africa colony of Côte d'Ivoire rise against the colonial administration; the rebellion is brutally suppressed by the military. January 8 – By the Treaty of Punakha, the Himalayan kingdom of Bhutan becomes a protectorate of the British Empire. January 11 – Charcot Island is discovered by the Antarctic expedition led by French explorer Jean-Baptiste Charcot on the ship Pourquoi Pas? Charcot returns from his expedition on February 11.
1973January 1973 January 1 – The United Kingdom, the Republic of Ireland and Denmark enter the European Economic Community, which later becomes the European Union. January 15 – Vietnam War: Citing progress in peace negotiations, U.S. President Richard Nixon announces the suspension of offensive action in North Vietnam. January 17 – Ferdinand Marcos becomes President for Life of the Philippines. January 20 – Richard Nixon is sworn in for a second term as President of the United States.