Answer:
Market economies utilize private ownership of the means of production and voluntary exchanges/contracts. In a command economy, governments own the factors of production such as land, capital, and resources. In reality, all economies blend aspects of the two.
Explanation:
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.
It was "Alexander I" who was the Russian Tsar who refused to surrender to Napoleon in 1812, even after Moscow had been captured and burned, since he suspected (correctly) that Napoleon's army would not be able to endure.