Yes because it is a proper noun. It is referred to particular group/people that's why it is necessary to write the word 'american' as "Americans".
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 always be capitalized.
Yes it should be capitalized.
As an abbreviation it should be capitalized.
Yes it should be capitalized.
Yes, America is always capitalized because it is a propernou n.
Yes because its more specific
Yes, "Yanks" should be capitalized when referring to the New York Yankees baseball team or when used as a slang term for Americans. In other contexts, it may not be capitalized.
Yes, "Chinook" should be capitalized because it is a specific tribe of Native Americans or a specific type of salmon fish.
All nationalities should be capitalized in sentences.For examples:Jew, Jews, JewishAmerican, AmericansMexican, MexicansCanadian, CanadianGerman, GermansIranian, IraniansChina, Chinese
Yes. Pygmies should always be capitalized, because they are an ethnic group, and therefore a proper noun, like "Americans" or "Norwegians".
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 always be capitalized.
Yes it should be capitalized.
As an abbreviation it should be capitalized.