<h2>
Answer: 1959</h2>
Explanation: They were admitted to the union in 1959.
D. They wanted to ensure that the other could not attack and destroy them
The correct answer is: "The emperor should ask family members to become involved in governing the empire"
Taizong wants the emperor to continue his reign, but he wants him to also let his family reign as well so that governing the huge country will be easier.