How did the Mongols commit what some may is the first recorded bioterrorism attack?

The ultimate origin of the plague remains uncertain: several countries in the Far East, China, Mongolia, India, and central Asia have been suggested

Explanation:

a, c, & d are correct:

they wanted lands to settle the extra population.

they wanted new markets for english goods.

they wanted to avoid civil war.

your mom

now im just trying to get this to 20 characters hope it works hey it works hope it okay bye