Which of these statements describes a necessary condition for civilization to develop in Mesopotamia?

- you did not put any "statements", but i found a place where this was already answered.

the silt from the Euphrates and Tigris rivers created fertile soil that allowed farmers to plant year round.

credits: link

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: