Which weapon was key to Kublai Khan defeating the Sung dynasty?

it is option C

Explanation:

i got it right on the instruction

the answer is b. osage.

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.