Tendentious research source will defend or accuse a subject based only on the opinion of the author of that source. In this case, this research source has no credibility because it was written based on the author's preferences and has no scientific basis to prove that the information presented is true.
For this reason, the question "is the information in this source from the biased point of view?" Is made to assess the credibility of the source.
Who was the first emperor to grant Christians religious toleration? Which emperor outlawed the pagan religions of the empire?<span>Religious toleration: Constantine, Theodosius outlawed pagan worship.</span>