This is a long question please rephrase it.
i dont know what you mean to put a statement in a question and answer it yourself.
Federalism: Federalism<span> is the system of government in which power is divided between a central government and regional governments</span>
Answer:. It was an era of peace and prosperity and allowed China to expand to a major world power. When was the Han Dynasty? The Han Dynasty ran for over 400 years, from 206 BC to 220 AD.
Explanation:The Tang Dynasty (618–907) is considered to be China's golden age