Between 1790 and 1900, cities in america grew rapidly as people moved to urban centers. shrank as rural areas became more popular. shrank as people began moving to the suburbs. grew slowly as they industrialized.

I believe the answer is: grew rapidly as people moved to urban centers looking for work

Between 1790 and 1900s, industrial revolution start to spread in America. This lead to the creation of many factories intended for mass production in urban centres. These factories provided many job opportunities that attracted many people from different background to move to urban centers and try their luck there.

the answer is a. since they were a huge producer of cotton and wanted the most money for it.