Fredrick Douglas was the African American who said the Mexican War was "disgraceful" because he thought if America would annex Mexico then slavery would be carried over into the new territory.
A. Enlightenment
The caste system is exclusive to Hinduism in this case, Hinduism did not have one founder, and neither Buddhism or Hinduism sought to actively convert people into their religions. Both Hinduism and Buddhism, however, believed in rebirth and eventual enlightenment.
B)
Source: http://www.loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/timeline/civilwar/recontwo/
Bill and bi-cameral
7. A
8. B