It impacts the reader since they don't get to see, feel and think what the other characters are. It leaves the reader in a limited state.
An independent clause is a clause that can stand alone in a sentence. (it expresses a complete thought.
a dependent clause is a clause with a subject and a verb, but it does not express a complete thought, therefore it can not serve as a sentence alone.
Answer:
He went to Hanoi last year.
