Why did Americans need to use the Mississippi River and New Orleans?

Because New Orleans was a very important trading port. ... The New Orleans was very important for importing and exporting goods;Mississippi River was a major transportation for settlers and good to ship items east.

Explanation:

Why did Americans depend on the Mississippi River and access to New Orleans? New Orleans was a port that was very busy with settlers and traders with expensive furs and very important.

rosevelt. 1973. "slaves everywhere"