Why is 1750 – 1900 called the “Age of Isms”?

This is when the the Enlightenment was taken place and the ideologies of religion were being pushed back as science and logical reasoning were starting to become apparent to people. Ideologies like conservatism, liberalism, and utopian socialism were starting to pick up steam.

The answer is option e.

The answer is d.  the north had organized schools, whereas the south had few organized schools.