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.
Territorial evolution of Russia
This continued for centuries; by the end of the 19th century, the Russian Empire reached from the Black Sea to the Pacific Ocean, and for some time included colonies in the Americas (1732-1867) and a short-lived unofficial colony in Africa (1889) in present-day Djibouti.