Question

Based on an analysis of u.s. social protest groups (ranging from labor unions to peace movements) between 1800 to 1945, one study concluded that __________ strongly influence its chances of success.

Answer 1

I believe the answer is: the organization and tactics of a movement

The organizations that use violence as a tactic to grab attention tend to be negatively perceived by people and had lower chance of success.
The organizations that use non-violence tactic on the other hand, had a higher chance of success since they make it easier for people to listen to their perspective.