What would Martin Luther King Jr., think of the United States today?

he would probably be happy that his speech and assassination made the world realize what they were doing.

That finally black people are as equal as white people in the US.

Explanation:

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:

sorry i tried to but i didn’t get it