Use of fertilizer *crop rotation

*use of seedlings

*improved irrigation

*new types of plows

The above list describes agricultural improvements under the

A.

Song Dynasty.

B.

Sui Dynasty.

C.

Yuan Dynasty.

D.

Ming Dynasty.

the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.

c. it required that townships set aside land for public schools.

b. parliament was weaker than the monarchy.

b is the answer i am assuming