The pentagon papers is a report of the Department of Defense detailing the involvement of the United States' military on Vietnam from 1945 to 1967. The papers were first brought to public by the New York Times in 1971. The papers showed that the Johnson administration had lied about the scope of its actions in the Vietnam War.
Differences
North India - landlocked
South India - Long coastlines
North India involved in wars and invasions,
South India - Little war was able to protect culture
North India - De urbanized
South India - Urbanized
Answer:
The Union was basically in control of more land than the confederates and they had a bigger army than the Confederates.