The overall purpose of John F. Kennedy’s inaugural speech was "<span>to inform the nation and the world that the US is ready for war if necessary" since he wanted to inspire confidence. </span>
Networking is basically getting to know your peers/colleagues. It is useful because if you know someone well, you can work better with them.
The Southern States and the Northern States had very different economies due to the geography of the States.
The Southern States has an agrarian economy, which needed cheap labor to make profits.
The Northern States had more of a focus on industry and banking and did not have as much of a need for slave labor.