That is called the Index finger or pointing finger
Answer:
requiring all children to attend school
it's either a or b but I mainly think a
The Confederacy knew they held all of the cards because they were the money makers for the Union. They were resentful that the North (Union) would try to dissolve their labor practices (slavery) because that would cut into the plantation owners money. The Confederates also didn't feel the Union was contributing anything to the states. If anything, they were actually a drain on the economy.
Ultimately, the South (Confederacy) decided to withdraw from the Union because they knew that they would prosper on their own without the North. They knew the North would collapse without the South as part of the states.