Question

in the mid - 1800s, the industrial revolution took over americas economy and society. factories, especially in the northeast, were at the forefront of the industrial revolution. these factories created many jobs for americans and german and irish immigrants, but had poor working conditions. since air conditioning units did not exist, factories were extremely hot and in general, were not clean. employees were subject to long hours at these factories, typically over 11 hours a day. the average workweek was monday to saturday, with sunday off so

Explanation:

The text describes factory conditions during the Industrial Revolution, stating factories were extremely hot and not clean. The option "the factories were very hot and dirty" matches this description, while "the work hours were very short" contradicts the text (which says hours were over 11 a day, Monday - Saturday).

Answer:

the factories were very hot and dirty