Brazil's President Dilma Rousseff is impeached and removed from office.
The first of a series of bombings in Moscow kills one person and wounds 40 others.
Kyrgyzstan declares its independence from the Soviet Union.
A parcel bomb sent by Ngô Đình Nhu, younger brother and chief adviser of South Vietnamese President Ngô Đình Diệm, fails to kill King Norodom Sihanouk of Cambodia.
The Federation of Malaya (now Malaysia) gains its independence from the United Kingdom.
USS Harmon, the first U.S. Navy ship to be named after a black person, is commissioned.
World War II: Serbian paramilitary forces defeat Germans in the Battle of Loznica.
Pennsylvania Central Airlines Trip 19 crashes near Lovettsville, Virginia. The CAB investigation of the accident is the first investigation to be conducted under the Bureau of Air Commerce act of 1938.
Nazi Germany mounts a false flag attack on the Gleiwitz radio station, creating an excuse to attack Poland the following day, thus starting World War II in Europe.
In an attempt to stay out of the growing tensions concerning Germany and Japan, the United States passes the first of its Neutrality Acts.
The Integral Nationalist Group wins the 1933 Andorran parliamentary election, the first election in Andorra held with universal male suffrage.
Polish–Soviet War: A decisive Polish victory in the Battle of Komarów.
World War I: Start of the Battle of Mont Saint-Quentin, a successful assault by the Australian Corps during the Hundred Days Offensive.
German Count Ferdinand von Zeppelin patents his navigable balloon.
Mary Ann Nichols, the first of Jack the Ripper's confirmed victims, is murdered.
War of the First Coalition: The British capture Trincomalee (present-day Sri Lanka) from the Dutch in order to keep it out of French hands.
William Livingston, the first Governor of New Jersey, begins serving his first term.