Which two agricultural contributions are common to both northeast woodland indians and southeast indians?

a. they made barren land fertile through technological innovations.

b. they developed economical systems of farming, such as terracing.

c. they used a creative method to maintain the fertility of the land.

d. they cultivated the “three sister” crops of corn, beans, and squash.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

i think u are supposed to write a long-essay answers to the long-essay questions