It was primarily "<span>d. the vulnerability to invaders from the north", since the Mongol territory was rapidly expanding--making the Mongol warriors all the more powerful. </span>
wood, a renewable resource. It is the first fuel that man knew in the world. ... Unlike coal or oil, wood can be obtained almost anywhere you live.
the spinning wheel to produce textiles, the water wheel used to power machinery and the steam engine were invented. These inventions aided in speeding up the production of manufactured items.
OK! so i just did this question not too long ago after studying it my answer was "C"
Answer: strongest in New York & Boston
Explanation:
