The Democratic Republic of Georgia (DRG; Georgian: საქართველოს დემოკრატიული რესპუბლიკა, Sakartvelos Demokratiuli Respublika), 1918–1921, was the first modern establishment of a Republic of Georgia. The DRG was created after the collapse of the Russian Empire that began with the Russian Revolution of 1917. Its established borders were with Kuban People's Republic and the Mountainous Republic of the Northern Caucasus in the north, Ottoman Empire, Democratic Republic of Armenia in the south, and Azerbaijan Democratic Republic in the southeast. It had a total land area of roughly 107,600 km² (by comparison, the total area of today's Georgia is 69,700 km²), and a population of 2.5 million. Georgia's capital was Tbilisi, and its state language was Georgian. Proclaimed on May 26, 1918, on the break-up of the Transcaucasian Federation, it was led by the Social Democratic Menshevik party. Facing permanent internal and external problems, the young state was unable to withstand the invasion by the Russian SFSR Red Armies, and collapsed between February and March 1921 to become a Soviet republic.