I believe the answer is: The printing press allowed mass production of books that spread new scientific ideas.
The invention of printing press make it easier for people to obtain information that they previously couldn't have dream to have access on. The number of Literacy rate after the printing press soar along with the number of scholars who choose to pursue higher education.
The Southerners were of the belief that Abraham Lincoln was about to split the Nation even though he had no intention too. And this led to a rising fear of a Civil war occurring in America.
George Washington had warned the American people against “the insidious wiles of foreign influence.” President Monroe, writes Arnold Whitridge, further developed “the thesis of non-entanglement.
