Well, it's not the Ku Klux Klan, as that was a large group of people who wanted to have slaves all return to their work, I've never heard of C, and we barely touched on D in school. From what I've learned, however, the Freedmen's Bureau helped former slaves by supplying food, providing education and homes, etc.
The land where he needed to build his canal was owned by Colombia and they would not allow it.
Answer:
C. Religious involvement increased
Explanation:
New religions placed importance on individual thought and action
