<span>It formed the basis for the exercise of judicial review</span>
Sectionalism in the 19th century
In the United States
Sectionalism in 1800s America refers to the different lifestyles, social structures, customs, and the political values of the North and the South. ... Southerners defended slavery in part by claiming that Northern factory workers toiled under worse conditions and were not cared for by their employers.
It is false machines did not almost never affect the way people live
There were some that used steam, so I think that correct answer is B