Which of the following is NOT part of the Mongol Empire legacy? A. connecting East Asia with Europe
B. spread of the bubonic plague
C. use of seige weapons and strategies to gain territory
D. investment in roads and trade routes
E. religious tolerance
F. civil service exams for an educated bureaucracy

B. Spread of the bubonic plague.

Explanation:

The spread of the Bubonic Plague or the Black Death has nothing to do with the Mongols. Scientists speculate that the first wave of the disease arrived in Europe by sea trade routes from Asia to Italy. Italy has been a center of European trade for a long time, and the diseases were transmitted to the mainland by infected ship rats. The plague ravaged Europe on several occasions, and in the first wave, half of the European population died as a result of the infection.