To make a short answer short: No.
No, because it is n ot a proper n ou n.
The word citizen does not need to be capitalized.
Oh, dude, you're really sweating the small stuff here. Technically, "continental breakfast" shouldn't be capitalized unless it's at the beginning of a sentence or part of a title. But, like, does it really matter that much? I mean, we're talking about breakfast, not launching a rocket into space.
The term is properly capitalized Democrat, follower of the Democratic Party (US).
That is the correct spelling for the large city in the US state of Ohio (capitalized), Akron.
To make a short answer short: No.
No, only Continental Drift Theory.
No, because it is n ot a proper n ou n.
Yes, because it is a noun.
Yes, US mail should be capitalized as it is an abbreviation for United States mail.
The word citizen does not need to be capitalized.
No, unless they are used at the beginning of a sentence or as part of a title. In regular usage, they should be written as "continental breakfast" in lowercase.
Yes, "Continental Army" should be capitalized as it is a proper noun referring to the unified military force established by the Second Continental Congress during the American Revolutionary War.
Yes, "Southeastern" in "Southeastern US" should be capitalized as it is part of a proper noun.
Oh, dude, you're really sweating the small stuff here. Technically, "continental breakfast" shouldn't be capitalized unless it's at the beginning of a sentence or part of a title. But, like, does it really matter that much? I mean, we're talking about breakfast, not launching a rocket into space.
Europe is larger than the continental US. Europe - 10,180,000 km2 Continental US - 9,798,364 km2
Yes. US Government is capitalized.