The Industrial Revolution is the name of the time when there was a big change in the way things were made. Instead of things being hand-made in small workshops, they were made more cheaply in large quantities by machines in factories. This improved the idea of assembly lines. People found that they could make many more things using an assembly line than each person working individually.
This mass production meant that the goods were sold for less. It started in the 1760s.[1] Many people began to move from an agricultural based life in the country to the towns where the factories offered more and better paid work.
A Second Industrial Revolution began in the 1870s.