Answer: The Han Dynasty ended the civil war and reunited China in 202 BC, ushering in a golden age of peace and prosperity, during which progress and cultural development took place.
The Western Han period continued with many of Qin's policies, but modified them with Confucian ideals. Because of this, the Han lasted much longer than the harsh Qin Dynasty.
The Western Han period in particular lasted until 9 CE, when there was a brief rebellion.
Confucianism was banned during the Qin, but resurrected during the Han. The Qin, with the focus on state power, was not shaped by religion the way Han was. The Han were regarded with the afterlife and worshiped their ancestors. Both had definite social classes, but in the Han the peasants were treated with greater respect and the classes were based on occupations.