The key reasons christianity spread to and survived in the roman empire

answer: christianity spread through the roman empire and eventually it received legal status in 313 ce. this was an important development because it meant that christians could openly practice their religion. in 380 ce, christianity gained even more influence when it became the official religion of the roman empire.

explanation:

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: