Answer:
Industrial Revolution
Step-by-step explanation:
The transition of manufacturing processes in Europe and the United States from 1760 to between 1820 and 1840 is known as First Industrial revolution. It was the time when the manufacturing of goods shifted from home and small shops to large factories. It changes the culture of the cities as people migrated to the urban areas in large numbers. It led to the shift of energy sources with usage of steam engines, coal.
The second industrial revolution was a period of advancement in steel production, electricity and petroleum production. The production of cost effective steel led to the expansion of railroads and construction of industrial machines. It lasted from 1870 to 1914.