The word British should be capitalized.
The 'B' should be capitalised.
Yes. It should be --- British Colonial Policy.
Yes, you should capitalize "About" in a title.
Yes, you should capitalize the C in Century.
A preacher should preach as long as he is under the power of the Holy Ghost.
No, you should not. You should only capitalize a word when it is at the start of a sentence or when it is a proper noun.
You should capitalize Colosseum when referring to the specific ancient Roman amphitheater in Rome.
Yes, you should capitalize "The Rotunda" as it is a specific place or location.
It should not be capitalized.
You should capitalize "Musical Theatre" when referencing the specific genre or art form.
Yes, it is correct to capitalize "Should" if it is used in a title as it is a noun in this context.
no