Georgia is a country in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded to the west by the Black Sea, to the north by Russia, to the south by Turkey and Armenia, and to the southeast by Azerbaijan. The capital and largest city is Tbilisi.
During the classical era, several independent kingdoms became established in what is now Georgia. The kingdoms of Colchis and Iberia adopted Christianity in the early 4th century. A unified Kingdom of Georgia reached the peak of its political and economic strength during the reign of King David IV and Queen Tamar in the 12th and early 13th centuries. Thereafter the kingdom declined and eventually disintegrated under hegemony of various regional powers, including the Mongols, the Ottoman Empire, and successive dynasties of Iran. In the late 18th century, the eastern Georgian Kingdom of Kartli-Kakheti forged an alliance with the Russian Empire, which directly annexed the kingdom in 1801 and conquered the western Kingdom of Imereti in 1810. Russian rule over Georgia was eventually acknowledged in various peace treaties with Iran and the Ottomans. Following the Russian Revolution in 1917, Georgia obtained its short-lived independence and established the first-ever republic led by the Social-Democrats in 1918, only to be invaded by Soviet Russia in 1921 and subsequently absorbed into the Soviet Union as the Georgian Soviet Socialist Republic.
Since the establishment of the modern Georgian republic in April 1991, post-communist Georgia suffered from civil and economic crisis for most of the 1990s. Following the bloodless Rose Revolution in 2003, Georgia pursued a strongly pro-Western foreign policy, aimed at NATO and European integration, and introduced a series of democratic and economic reforms, which brought about mixed results, but strengthened state institutions. The country's Western orientation soon led to the worsening of relations with Russia, culminating in the brief Russo-Georgian War in August 2008.