It promoted it because now they wanted to fight for there county and supported it
I think its c instead, because he meant that fear was only making things worse. not fearing fear and failure would help in the long run; so a positive attitude instead would help.
I'm not sure if you made a typo or not but in the current context I can only see negligible being relevant.
Teddy Roosevelt was also known as the trust buster. He helped to stop the monopolies and the robber barons.
