Which words in this sentence are common nouns?
during montezuma's rule, the aztec empire stretched from ocean to ocean.
choose all answers that are correct.
a. aztec
b. empire
c. rule
d. stretched
e. montezuma's

Nouns are names of a person, animal, place, event, etc. It could be proper or common noun. Common nouns are names of general items and you find them everywhere you go. These words are not usually capitalized, except if it is the starting word in a sentence. Proper nouns on the other hand are more specific names and they are capitalized. In the sentence: During Montezuma's rule, the Aztec empire stretched from ocean to ocean.  The common nouns could be empire and rule.

Dhope this /works