Yes, because "North Valley" is a proper noun.
Yes it should be capitalized.
If it is the name then it is proper and should be capitalized Happy Valley but if you are saying, I saw a happy valley as in the valley was happy then it is common.
Yes, "Mount McKinley" should be capitalized because it is a proper noun referring to a specific mountain. "North America" should be capitalized when referring to the continent, but not when referring to compass directions.
Yes, "North" in "North Mississippi" should be capitalized because it is part of the proper noun that specifies a specific location within Mississippi.
Yes, “Arctic” should be capitalized when referring to the region around the North Pole. The Arctic is a proper noun and should always be capitalized.
No, "north seeking" should not be capitalized unless it is at the beginning of a sentence.
Yes. It should be-North Atla ntic Ocea n.
you always do no matter what
Yes, it is the name of a place i.e. a 'proper noun'.You should always capitalize a proper noun.
No. It's not necessary.
Yes. It should be -- Southeastern North Carolina.
no. unless it is someones name or starts at the beginning of a sentence