:
in the supreme court case dred scott v. sanford, what was scott’s claim?

a. that he had been brutally treated by his owner and should be freed.

b. that his time in a free territory meant that he was a free man.

c. that he had been illegally captured in the north because of the fugitive slave act.

d. that the kansas-nebraska act must be repealed.

i think its D. That the Kansas-Nebraska Act must be repealed.

Explanation:

the answer is b. 300t + 3/2xt

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: