1. how did changes in manufacturing in the late 1700s and early 1800s affect people living in northern cities?
a. fewer people worked in factories as water-powered machines increasingly replaced laborers.
b. factories used interchangeable parts and water power, so workers’ hours became shorter.
c. factories employed more people, including women and children, for lower wages and longer hours.
d. as factory employment became less widely available, people began leaving the cities to work in agriculture.

The question ask on which of the following statement states on how did changes in manufacturing in the late 1700s and early 1800s affect people living in northern cities and the best answer would be letter C. Factories employed more people including women and children for lower wages and longer hours

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Changes in manufacturing in the late 1700s and early 1800s greatly affected people living in cities in the North in that an increase in manufacturing due to the Industrial Revolution led to a great increase in the number of jobs available, which increased the standard of living for many citizens. 

They showed the country that integration could be successful.