What is the main reason for the growth of cities and urban populations in the 19th century?

The main reason for urbanization (growth of cities and urban population) in the 19th century was industrial and subsequent economic progress. Extraction of minerals and new methods of use have led to a powerful leap in the industrial and industrial spheres – factories and factories begin to open in cities, it becomes possible not to depend on land and weather conditions, which are important in agriculture, people rush to cities in search of a permanent, not seasonal, as in the village, earnings.