Later civilizations developed basic algebra and geometry by building on the number system first created by the
a. israelites.
b. sumerians.
c. egyptians
d. babylonians.

the answer is a

their confiscation of contraband and the sinking if the lusitania

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.