It was in Roman territory which was filled with cultural diffusion. Rome tolerated all religions as long as people payed taxes to the emperor to keep the peace. The emperor allowed other culture and religion so there wouldn't be an revolts against their own people. Later on a bad emperor Nero blamed Christians for a fire which changed things which led to the fall of Rome. Hope this helped!
It was used as an engine in locomotive trains, & also in steam boats. it also helped create electricity which allowed things such as morse code & synchronization of the world’s clocks.
150,000 for Hiroshima and 75,000 for Nagasaki