How was the invention of the wheel important to the sumerians? a.
it allowed them to conquer neighboring states.
b.
it made traveling with traded items easier and increased trade.
c.
it improved their communication and recordkeeping.
d.
it them to water their crops all year. i don't understand

Option B.

Explanation:

It made traveling with traded items easier and increased trade, is the right answer.

The Sumerians employed the wheel to transport heavy packages over far areas. The use of wheel had a fundamental impression on transportation and next on cultivation and industry. Moreover, the Sumerians used wheels in battles (to run chariots). With the help of the wheel, the Sumerians could easily get into the battle.

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.

c. the dred scott v. sandford case,