Use of fertilizer • crop rotation
use of seedlings
• improved irrigation
new types of plows
The above list describes agricultural improvements under the
OA. Ming Dynasty.
ОВ. .
Sui Dynasty
OC.
Song Dynasty
OD. Yuan Dynasty.

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.

a. men

and during later times male slaves as well

the answer is b. hope this .