How did transportation differ in the North and South and why did that have an impact on their lives?

Ineed on 2-4 i want y’all to reply to this question so i can turn this into my teacher tomorrow

Why didn’t the united states participate in the league of nations? the u.s. senate did not want the country to join. president wilson did not want the country to join. the league of nations was only for european countries. the league of nations had failed to prevent world war 1

Prior to which amendment were slaves counted as three-fifths of a personality