A historical source can be deemed unreliable if the author appears to unfairly favor a particular side or viewpoint. In this case, the source is...

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cpl106 · Answer

he source becomes unreliable because the author appears to unfairly favor a particular side or viewpoint, then the sources are called being biased. explained - The source is biased when the author only wants to give their opinion and view point

aadkins · Answer

tysm

cpl106 · Answer

$\color{#0cbb34}{\text{Originally Posted by}}$ @aadkins
tysm
$\color{#0cbb34}{\text{End of Quote}}$
anytime