"The cause of" would be the answer
Emperor Taizong was the second emperor of the Tang Dynasty who ruled from 626 till 649. His name was Li Shimin and he wrote his advice on effective government for his heirs a year before he died in 649.
Question: Emperor Taizong stabilized China’s government by ______
Answer: A) reviving China's official bureaucracy
Operation Overlord was the codename for the Battle of Normandy, the Allied operation that launched the successful invasion of German-occupied Western Europe during World War II
Sam Houston was also the President of the Republic of Texas. He was elected twice (1936 & 1841) as the President of the the Republic of Texas. He was very instrumental in the defeat of the Mexicans, which resulted in the independence of Texas. When Texas joined the Union he became a Senator.