Yes it is a correct sentence
Answer:
I would say that the U.S. was justified for dropping the bombs on Japan. Up until the Pearl Harbor bombing, the U.S. was completely uninvolved in WW 2. When Japan bombed Pearl Harbor, it killed many people.
Answer:
The purpose of an exposition in a story is the following:
to introduce key characters
to present the central conflict
to establish the setting
Explanation: