Russian Empire
The Russian Empire, also known as Imperial Russia or simply Russia, was an empire that existed across Eurasia and North America from 1721, following the end of the Great Northern War, until the Republic was proclaimed by the Provisional Government that took power after the February Revolution of 1917.
Russian Empire
The Russian Empire functioned as an absolute monarchy on principles of Orthodoxy, Autocracy, and Nationality until the Revolution of 1905 and then became a "de jure" constitutional monarchy. The empire collapsed during the February Revolution of 1917, largely as a result of massive failures in its participation in the First World War.