What did the ancient romans build to maintain the supply of water in their cities?
sewers
aqueducts
highways
temples

aqueducts is the answer taking the e lesson rn :)

Explanation:

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."