Why were the mongols so successful in their raids of chinese towns?

a. their daoist philosophy taught them a successful strategy.
b. their skill on horseback allowed them to launch surprise attacks.
c. their consumption of sheep meat made them extremely strong.
d. their gender equality gave them a larger fighting force.

B. Their skill on horseback allowed them to launch surprise attacks.

Explanation:

they are the executive, (president and about 5,000,000 workers) legislative (senate and house of representatives) and judicial (supreme court and lower courts). the president of the united states administers the executive branch of our government.

i really really really really really really dont know