Which accurately describes a letter written during the time a historical event occurred?
a. effective secondary source document
b. too biased for historical evidence
c. too focused for historical evidence
d. unreliable narrative source
e. useful primary source document

A letter written during the time a historical event occurred would be considered a "e.useful primary source document," since it provides an "unfiltered" view into the life and times of those in the past. 

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more