PLEASE ANSWER FAST!! How did terraces improve Chinese agriculture?

A. Sped up plowing and sowing of fields
B. Created more farmland for raising crops
C. Made it easier to harvest grain and other crops
D. Simplified the process of cleaning seeds from plant fibers

By the late 1930s, how were u.s. officials beginning to view japanese policies of expansion? a. they attempted to join forces with japan so as to increase u.s. territory. b. they warned them to stop expansionist actions or face potential u.s. intervention. c. they sent representatives to japan to work out territorial rights in a diplomatic fashion. d. they became fearful of their military power