The industrial revolution was caused by many factors: coal extraction, agricultural production, iron smelting, the railways, steam power, and industrial production. All of these causes affected each other and played an important role in developing each factor, for example, coal extraction. Coal extraction allowed iron smelting to happen because the safety lamps, which used coal, helped people go deeper into caves because those lamps would not cause explosions which helped people not be as scared going deep into caves. The coal would also allow people to smelt iron into new tools, which would make mining much more efficient. Also, iron could be used to make steam engines which could be used in new types of transportation, such as the steam train. The newly found train forced people to make something that the train could travel on like the railways. The steam power could also be used to power the agricultural machines which allowed less people to be working on a farm at a time. Those people needed new jobs, to get money so they used the steam train and the railways to travel into the cities and work in the factories. In conclusion, all of these effects have a very important role in the development of the industrial revolution, and all of these effects play important roles in developing each other, and the industrial revolution.