Answer:
Soon, soldiers and civilians began using the nickname Uncle Sam to refer to the United States.
Explanation:
Sentences 11 and 12 are both talking about "using the nickname Uncle Sam to refer to the United States".
In sentence 11, it talks about soldiers. In sentence 12, it talks about civilians.
You can say:
Soon, soldiers and civilians began using the nickname Uncle Sam to refer to the United States.
It’s a phrase because it doesn’t have a subject
Giving human characteristics to object, places, or things
Ex: The paper danced across the classroom
Swimming is a good sport it helps build muscle.
