What effect would a british blockade of the mississippi have on the us economy during the war of 1812

The British Blockades during the War of 1812 impacted America greatly. It helped to grow American manufacturing and factories since they could not get the usual imports from Europe. It also spurred a growth of infrastructure (roads, bridges, etc.) so that people could more easily move around and get materials and goods more easily.

Ibelieve appendix i maybe wrong