It would take approximately 6 days
The overall purpose of the conferences at Casablanca (January 1943), Tehran (November 1943), Yalta (February 1945) and Potsdam (July 1945) was to plan the Allied victory against Axis forces. The correct option among all the options that are given in the question is the third option or option "C". I hope it helps you.
Answer:
Giving the Union control of the Mississippi River
Explanation:
The Union wanted control of the Mississippi to cut off trade and transport for the South. The river being taken also made things harder for the Confederates (because it cut their side in half, so the Union had the upper hand).
The answer would be C. the movement of plants, animals, people, and diseases between the old world and the new world.
Hope this helped!
~Just a girl in love with Shawn Mendes