Question

how did factories multiply in late 18th century?

Answer 1

Due to migration of people's industries were shifted and the demand also increased
So there was a rapid growth in factories or industries

Answer 2

As the population increasesd the supply of goods were in demand. The factory owners multipled their factories. One advantage for the factory owners and the factory was that many factory in 18th century was set up near the river so the transportation was made so easy and the factories multiples