The Presidential Convention in NYC's old Madison Square Garden.
Answer:
In general, the southern state governments formed during this period of Reconstruction represented a coalition of African Americans, recently arrived northern whites (“carpetbaggers”) and southern white Republicans (“scalawags”).
Explanation:
Before, trains, cars, airplanes and trucks existed, rivers were used for travel. They carried people and goods. However, this way of transportation was very slow. All that changed with the arrival of the steamboat in the late 1700s and early 1800s. The steamboat could travel at the amazing speed of 5 miles per hour. It soon changed all over river travel and trade and dominated the waterways.
I'm pretty sure it would be B, because the tensions between most groups are mainly to do with religious differences, especially relating to the belief of how many gods exist.