By considering A for farmers who began to use crop rotation, B for trade grows C for dramatic increses of the european demographic figures, D for the increases of the supplies of grain and food and E for the time when farmers begun using iron plows I would say timewise the right order would be: E,C,A,B,D
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.
farmers begin to use crop rotation.