Answer:
conflicts often lead to changes. if something happens that you don't like, you would change so it doesn't happen again, etc.
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.
Ven dos veces al día antes del ascensor.
