Answer:
I think it is B
Explanation:
Southern states that seceded immediately after Lincoln's election in 1860 did so because they had already been planning it in the event of a Republican victory. Their motivation involved what they perceived as a threat to the institution of slavery, which their economy was dependent upon.
They both had to know how to read and write.
Answer:
The scientific revolution, which emphasized systematic experimentation as the most valid research method, resulted in developments in mathematics, physics, astronomy, biology, and chemistry. These developments transformed the views of society about nature.
A. Cotton gin
The South was based on agriculture, which means lots of cotton was produced. The cotton gin is a machine which made this much easier.