Idon’t know or get this question. my school doesn’t teach us anything! question: why is it useful to be able to make generalizations about a topic? can someone pls tell me today!

Why did the south think that its secession from the union would succeed? a. the confederate army was larger than the union army. b. european nations had promised to support the south. c. the south only had to defend itself against the north, not defeat it.