Yes. They are abbreviations for the Latin terms ante meridiem and post meridiem, and should therefore always be capitalized. Technically they should be spelled A.M. and P.M. for the same reason, but they are most often not and it is considered correct either way.
Capitalize the first word in a sentence. Capitalize proper nouns, such as the names of people and places. Capitalize the pronoun "I." Capitalize the first word of a quote. Capitalize days of the week, months, and holidays. Capitalize the titles of books, movies, and songs. Capitalize the first, last, and important words in titles.
No, you do not capitalize the second word in the complimentary closing.
It is not necessary to capitalize pronouns in titles unless they are at the beginning of the title.
No, you do not have to capitalize the word "female" unless it is at the beginning of a sentence or part of a title.
Yes, you should capitalize "Hydrocodone" as it is a proper drug name.
no, but you do capitalize mum
Capitalize the first word in a sentence. Capitalize proper nouns, such as the names of people and places. Capitalize the pronoun "I." Capitalize the first word of a quote. Capitalize days of the week, months, and holidays. Capitalize the titles of books, movies, and songs. Capitalize the first, last, and important words in titles.
No, you do not capitalize the word drama.
You capitalize the first A but not the last a.
do you capitalize roaring twenties
do you capitalize the word protestant
You capitalize Huntington
Capitalize challah bread
You would not capitalize it. cotton gin
You capitalize Judge Smith. You do not need to capitalize retired as it is not part of his title.
Yes, you always capitalize "Cuban."
yes, you do capitalize The Black Hills.