<span>In 1892 the first national convention of the people's party was held in
</span>Omaha, Nebraska
1.) Many people did not agree with/or wanted to be drafted.
2.) A large amount of people/The United States of America did not support the war.
3.) Many protests were taking place on college campuses.
I believe your answer is B.
Geographically, the fact that it was so concentrated in largely populated areas. Spreading may have occurred as people traveled. Basically because of huge population in the concentrated areas of the plague. Hope that helps a bit.
