Answer:
1. China
2. Paper
3. Wealth
4. Silk Road
Explanation:
The Han dynasty is known as a golden age because of the growth in <em><u>China.</u></em>
Many important inventions came from this time period, including <u><em>paper.</em></u>
Royal tombs were filled with images that represented <u><em>wealth</em></u>.
Buddhism spread northward into China along the <u><em>Silk Road</em></u>.
I believe the answer is: positive externality
Positive externality refers to The benefit that enjoyed by a third party when the first and second party are conducting a transaction.
When you receive a vaccines, you prevent yourself from becoming a host that could contaminate other people from getting the virus. In the example above, you and your children are the first and second party. And other children are the third party.
In the United States on the East Coast- New York, Boston, Charleston, Norfolk.