Isang pandaigdigang samahang nakabase sa Washington DC Estados Unidos. Mayroon itong tatlumpu't limang kasaping
nagsasariling estado ng Amerika

(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.

b.provides a written record of the transaction