Answer:
because it was built in different time periods, some parts of the great wall are more decayed then others.
that is only one reason, there are many more reasons as well.
Explanation:
Hi
ANSWER = I & III
<em>Why would an author write to create long, hard-to-read passages for students ???? They have more personal purposes, personal ideas they want to share before being sure to be studied in class..........</em>
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