The Roman legions, which were columns of roughly five-thousand men a piece, were greatly beneficial to the Romans because they were able to maneuver more freely around enemy forces, which were usually condensed into a single unit.
<span />
C because north and south fell apart because they couldn’t agree on slavery which led to the civil war
I believe the answer is: 2. but should be abolished.
The abolitionists see slavery as inhumane and should be stopped. This view become even more popular after the industrial revolution that come from western Europe, which eliminate the needs of using slave labour since it can be replaced with machines.
America's presence in world affairs would decrease