Which form of transportation was most used by settlers moving to the territory between the Allegheney Mountains and Mississippi River?

A. covered wagon

B. keelboats or flatboats

C. horses

The person above is correct use their answer

"B. keelboats or flatboats "

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B. keelboats or flatboats

Explanation:

Keelboats or flatboats were previously used to navigate in this region but a well-developed means of transport known as Steamboat was later used. The settlers transport their Agricultural produce through the Mississippi river within the North West to the ocean side of the East coast