Answer:
B. Mongol
Step-by-step explanation:
The Mongol Empire covered the largest geographic territory among the postclassical empires. This is primarily because the Mongols, under the leadership of figures like Genghis Khan and his successors, were known for their highly successful military campaigns of conquest. They rapidly expanded their empire across vast regions of Asia and Europe, including parts of China, the Middle East, and Eastern Europe. The scope of their territorial control was unparalleled during the postclassical period, making the Mongol Empire one of the largest land empires in history.