First One - This made commutes to work shorter spending less money and time on transportation and this also allowed children to go to school as schools were much closer to these industrialized areas
Second One - Those large machines were dangerous and at the time they didn't have unions so the owners of these factories didn't have to spend money on safety precautions
Third One - The large increase in huge factories caused a lot of pollution and got lots of people sick that lived near the factories
Fourth One - This allowed large cities to built and allowed for America to advance and create infrastructure
