"In 1641 it was claimed by the Massachusetts Colony and became known as the Upper Province.
Then in 1679 it became a Royal Province."
The difference lies in interpreting the two sides of the conflict. McPherson saw the war as the war between the evil South and the good North. He was focused on the abolition of slavery and their integration into the society as free people. Horwitz on the other hand saw South not as evil but as a faction which went to war to protect its economic interests.
