Archduke Franz Ferdinand of Austria-Hungary and his wife are shot dead by Gavrilo Princip in Sarajevo, triggering the crisis that leads to the First World War.
Austria-Hungary declares war on Serbia, drawing Europe's powers into a global war that lasts until the armistice of 11 November 1918.
The US-built Panama Canal officially opens, linking the Atlantic and Pacific Oceans.
After the 1857 rebellion, the Government of India Act transfers rule from the East India Company to the British Crown; the Mughal Empire formally ends.
Francisco Madero calls for revolt against Porfirio Díaz, launching a decade-long revolution involving figures such as Pancho Villa and Emiliano Zapata.