Yes, it is a proper noun or adjective.
Yes, as Greeks is a plural noun.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
It should only be capitalized if it forms part of a title.
Yes it should be capitalized.
As an abbreviation it should be capitalized.
Yes it should always be capitalized.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
Yes it should be capitalized.
No. It should not be capitalized.
It should only be capitalized if it forms part of a title.
Yes, it should be capitalized.
The first 'c' should be capitalized.
Yes it should be capitalized.
Yes it should always be capitalized.
As an abbreviation it should be capitalized.
Yes it should be capitalized.
No it should not be capitalized.
"Roman" should be capitalized, but "goddess" should not me. The names of Roman goddesses are proper nouns and should be capitalized.