The point that is considered the starting point of the fall of Tang Dynasty is during Emperor Mu Zong reign, around the year of 821-824. He is known for his high-spending, alcoholics habits and as neglectful emperor.
The correct answer is The fall of the Tang Dynasty began with lack of leadership.
The answer is B i am positive
Justinian was one of the most important rulers from the over 1000 years of rule of the Byzantine Empire. He created many codes, or laws, to unify the empire. He spread religion throughout the Byzantines. Expanding the empire was also a big achievement made by him. The most important architectural monument of the Byzantines, the Hagia Sophia, was also created at this time.
(Sorry, I'm a World History geek, I took AP World History freshman year ;))
The answer to your question is letter C. homo sapiens. Hope this helps.