Hawaii: The Only American State That Was Once a Kingdom

Did you know that Hawaii is the only American state that was once a kingdom?

If yes, do you know when Hawaii joined the U.S.?

Yes, Hawaii joined the U.S. in 1959.

The correct sentence structure is (D) Hawaii, which joined the U.S. in 1959, because it correctly uses commas to set off a non-restrictive clause providing additional information about Hawaii.

Hawaii, which joined the U.S. in 1959, is the only American state that was once a kingdom. This fascinating fact showcases Hawaii's unique history as a former kingdom before becoming a part of the United States.

When Hawaii officially became the 50th state of the U.S. in 1959, it marked a significant moment in history. The beautiful islands of Hawaii are not only known for their breathtaking landscapes but also for their rich cultural heritage as the former kingdom of Hawaii.

The inclusion of the comma in the sentence "Hawaii, which joined the U.S. in 1959," is essential for indicating that the information about Hawaii joining the U.S. is non-restrictive. This means that the clause provides additional information but is not crucial for understanding the main point of the sentence.

Next time you visit Hawaii, remember its unique status as the only American state that was once a kingdom, and appreciate the rich history and culture that shapes this beautiful paradise.