The Kingdom of Georgia fell to invasions.
The Kingdom of Georgia , also known as the Georgian Empire , was a medieval monarchy which emerged in circa 1008 AD . Lasting for several centuries , the kingdom fell to the Mongol invasions in the 13th century , but managed to re-assert sovereignty by the 1340s . The following decades were marked by Black Death spread by the nomads , as well as numerous invasions under the leadership of Tamerlane , who devastated the country 's economy , population , and urban centers .