Tbilisi's "Golden Age" did not last for more than a century. In 1226, Tbilisi was captured by the Khwarezmian Empire Shah Jalal ad-Din, and its defences severely devastated and prone to Mongol armies. In 1236, after suffering crushing defeats to the Mongols, Georgia came under Mongol domination. The nation itself maintained a form of semi-independence and did not lose its statehood, but Tbilisi was strongly influenced by the Mongols for the next century both politically and culturally. In the 1320s, the Mongols retreated from Georgia and Tbilisi became the capital of an independent Georgian state once again. An outbreak of the plague struck the city in 1366.