Question

I need to know if this phrase is a question or not. " TO WHAT EXTENT WAS THE AMERICAN REVOLUTION A MUTINY AGAINST BRITISH TAXES"

Answer 1

No this isn't a question. I say this becasue it doesn't contain a question mark.
But it is stating a question. So this would be considered an open ended question.

Answer 2

it depends how the rest of the phrase is being said. just from that, it is a question. or it can be looked at as an open ended question