if its the name of a person or a place, it allso includes nick names If your referring to north south east west, only if its at the start of a sentence
YES
No, homework does not need a capital letter unless it is the first word of a sentence.
No.
that would be Riga, the capital of Latvia.
Yes you do.
NO
no
not really
No
Canada, whose capital is Ottawa.· Ottawa is the capital city in Canada
North America is a continent. It begins with the letter N.
The abbreviation of units is usually written with a capital letter, if it is based on the name of a person.