If it were the name of a course, such as Commercial Law 101, then you would capitalize the words 'commercia law'. However, if you are just speaking about commercial law in general in an essay, then you would not capitalize it.
No it should not be capitalized.
Yes, "journalism" should be capitalized in an essay as it is the name of a specific profession or field of study.
Egyptian should be capitalized but not the ki ngs.
Yes, "flu" should be capitalized in an essay as it is the shortened form of influenza, which is the proper noun referring to the virus.
Yes, it should be capitalized and underlined because it is a published work.
Yes, Indian should be capitalized.
Yes, as an acronym LPN should always be capitalized.
No
No, unless your saying Mother Goose.
Yes, the term "Navajo Nation Seal" should be capitalized in an essay to show respect for the official title and importance of the symbol.
Yes, "Green Turtle" is a proper noun and should be capitalized in an essay.
Yes, "White American" should be capitalized in an essay as it is a proper noun.