Anonymous
Historical drama usually means that a bunch of luvvies got it wrong.
Robert
One is based on strict facts. One is made stretching the facts to make it watchable.
Anonymous
a] WRONG FORUM
.
b] One is non-fiction and the other is fictional. Duhhh.
God
A historical drama is "based on" actual events. This means there is a little fact and a lot of theater. A documentary contains all facts as they are understood by the writers.