The events happened on 30th December are :
1922 : Union of Soviet Socialist Republics established : The Union of Soviet Socialist Republics, formed this day in 1922 with its capital in Moscow, eventually incorporated 15 republics and constituted (in area) the largest country in the world until its dissolution in 1991.
1918 : The Spartacus League was transformed into the Communist Party of Germany at a party congress.
1916 : Grigory Yefimovich Rasputin was poisoned by Russian conservatives in an effort to halt his influence over Empress Alexandra and the royal family.
1902 : A new southing record was set by Robert Falcon Scott, in company with Ernest Henry Shackleton and E.A. Wilson, as they reached the Ross Ice Shelf at the head of the Ross Sea in Antarctica.
1896 : Philippine nationalist José Rizal was publicly executed, enraging and uniting Filipinos.
1853 : The United States acquired nearly 30,000 square miles (78,000 square km) of additional northern Mexican territory with the signing of the Gadsden Purchase.
1847 : The reformist Illinois governor John Peter Altgeld, known principally for his pardon of German American anarchists involved in the Haymarket Riot, was born in Niederselters, Prussia.
1803 : The Maratha chief Daulat Rao Sindhia and the British signed the Treaty of Surji-Arjungaon.
29th December | 31st December