What is being compared and contrasted

Generally speaking, comparing is showing the similarities, and contrasting is showing differences between two things that are related in some way. For example, you wouldn't compare/contrast reading a book to driving a car, but you would compare reading a book to reading with an e-reader.

is ther a pic or essay or sum to go with this

Explanation:

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity