Yes, the names of languages are capitalized.
Latin
Since Rome's language was Latin, you would have to write in Latin.
Yes, "Hormel" should be capitalized as it is a proper noun/name. You would write it as "Hormel chili."
If you write "Bob is the superintendent, no, it wouldn't be capitalized. If it's part of Bob's title (Bob Smith, Superintendent), yes, it would be capitalized.
Keagan is already written in Latin letters, but if you want to write it phonetically in Latin, it would be something like Kigan or Cigan.
desiu
Yes. The correct way to write it would be..... Great Depression.
Yes, the word English is always capitalized.
According to Jewish tradition, Moses was raised in the Egyptian royal court and would have been taught to read and write by Egyptian tutors.
He taught himself how to read and write. His neighbor taught him how to read and write. His neighbor taught him how to read and write.
Poema a Deo.
Yes, "Good morning" is typically capitalized in a letter when it is used as a greeting at the beginning of the correspondence. For instance, you would write, "Good morning, John." However, if "good morning" appears later in the letter as part of a sentence, it would not be capitalized.