Factory conditions were so bad because they didn't have the technology nor the knowledge we have today to run a decent factory. the owners were concerned about profits then a worker's safety. and since workers rights weren't written at the time, the owners got to treat the workers howecer they pleased.
a fortress on thr seacoast south of casera where bar koknba was slain, the rebellion was crushed in 135 according to Christian sources, jews were thenceforth forbidden to enter jerusalem.