Answer:
c. a perfected method of making paper
d. the first civil service based on merit
Explanation:
The Han dynasty which lasted between 206 BCE to 220 BCE in China is characterized by various factors, among which is the numerous achievement the dynasty was recorded to have accomplished.
Some of which are:
1. a perfected method of making paper
2. the first civil service based on merit
3. Establishment of Silk Road.
4. Improvements to ship designs and in map making.
