Answer:
By looking at the map we can infer that A) Manufacturing was a key part of the economy in the Northeast.
Step-by-step explanation:
Most of the technology was brought over from England and as people started to settle they started to work with cotton and manufacturing textiles. It is true that being close to a body of water made it easier not only to transport the goods but also the machinery needed. However, Illinois and Indiana have Lake Michigan as a primary body of water. We know that textiles were a big part of the economy since very early on and so were cotton fields, were they would extract the necessary material to them manufacture the textiles needed.