Explanation:
it helps to increase trade relationship between nations of the world
The key waterways in the south during the civil war were: Mississippi,Ohio and Tennessee rivers
Both side aware that controlling these rivers would cut down oppositions food and weaponry supplies along with limiting the opposition's ability to mobilize. The union army managed to leverage on this situation better than the Confederates, leading to the union's victory during the civil war.
Answer:
correct answer is c please follow me and thanks