How did industrialization encourage cities to grow

The industrialization opened up a lot of jobs. It was constantly growing and very profitable. The people saw it as an opportunity to get away from the hard work in the farmlands, so they were moving into the cities in order to get a job in some of the industrial facilities. And indeed, all of the people were finding jobs without any problem. As the word was spreading around, plus the propaganda from the governments, more and more people were moving into the cities were the industry was developed, which resulted in doubling, tripling, even quadrupling the size of the cities in a very short period of time.

Industrialization encouraged cities to grow by creating economic growth and job opportunities in them.

Industrialization means more industry and more industry means more factories and work places. Most newly established factories were in the cities, creating demand for factory labor. This created more jobs and demands for housing, thus establishing urban areas (apartments and houses for workers).

As industrialization created jobs, more and more families from rural areas moved into cities. Apart from housing, they needed daily facilities, such as schools, offices, recreational areas, churches etc. All this contributed to expanding the city's territory and its growth.