In Brushaber v. Union Pacific Railroad Co., the Supreme Court of the United States declares the federal income tax constitutional.
Roman Emperor Theodosius I proclaims his eight-year-old son Honorius co-emperor.
American entry into World War I: President Wilson of the still-neutral United States calls for “peace without victory” in Europe.
Commercial service of Concorde begins with the London-Bahrain and Paris-Rio routes.
A protest movement in Iceland culminates as the 2009 Icelandic financial crisis protests start.
World War II: The Japanese conquest of Burma begins.
Australia’s worst rail disaster occurs at Granville, Sydney killing 83.
uring the French Wars of Religion, Henry IV of France declares war on Spain.
Hartley Colliery disaster: Two hundred and four men and boys killed in a mining disaster, prompting a change in UK law which henceforth required all collieries to have at least two independent means of escape
15 January 1889 – The Coca-Cola Company, then known as the Pemberton Medicine Company, is incorporated in Atlanta.