Which factor increased trade under the Mongol rule? A. important mathematical discoveries that contributed to technology B. the good relationship between the Chinese people and the Mongols C. the invention of new weapons that made sieges of cities easier D. construction and protection of roads that ensured safe and easy travel E. the tolerant attitude of the Mongols toward all religions
The most important factor that led to increased trade under Mongol rule was the construction and protection of roads that ensured easy and safe travel.
