The Black Plague, perhaps? *shrug*Why do you need to capitalize "Plague"? To what does it refer? What is the context of its usage?
caw
Blacbird's question is valid. According to Merriam-Webster, it's the plague, the bubonic plague, or black death. None of it really needs to be capitalized any more than whooping cough or the measles.
If you are referring to a specific outbreak, capitalize the name: The Great Plague for example. If you are calling a specific outbreak "The Plague", then use caps on both words. Capitalizing the name of the disease is optional.
The reason I'm asking is regarding a fictional period of history in my book so"
the Civil War
or
the Great Depression
correct?
Correct. Like others have said, "the" is not part of the name.