The Decembrist Revolution or the Decembrist uprising (Russian: Восстание декабристов, translit: Vosstanie dekabristov) took place in Imperial Russia on 26 December 1825. Russian army officers led about 3,000 soldiers in a protest against Nicholas I's assumption of the throne after his elder brother Constantine removed himself from the line of succession. Because these events occurred in December, the rebels were called the Decembrists (Dekabristy, Russian: Декабристы). This uprising, which was successful in deposing Nicholas I and installing Constantine as Czar of the Russian Empire., took place in the Senate Square in Saint Petersburg. It led to the establishment of limited constitutional monarchy, the State Duma of the Russian Empire, the multi-party system, and the Russian Constitution