who was the founder of this dynasty?
Liu Bang.
Han dynasty
The Han dynasty () was the second imperial dynasty of China (202 BC–220 AD), established by the rebel leader Liu Bang and ruled by the House of Liu. Preceded by the short-lived Qin dynasty (221–206 BC) and a warring interregnum known as the ChuHan contention (206–202 BC), it was briefly interrupted by the Xin dynasty (9–23 AD) established by the usurping regent Wang Mang, and was separated into two periods — the Western Han (202 BC–9 AD) and the Eastern Han (25–220 AD), before being succeeded by the Three Kingdoms period (220–280 AD). Spanning over four centuries, the Han dynasty is considered a golden age in Chinese history, and influenced the identity of the Chinese civilization ever since. To this day, China's majority ethnic group refers to themselves as the "Han Chinese", the Sinitic language is known as "Han language", and the written Chinese is referred to as "Han characters".
who was valued in han society under the philosophy of confucianism Emperor Gaozu of Han. can you mention few names of people of the royal family? Emperor Zhao (r. 87–74 BCE) , Emperor Yuan (r. 48–33 BCE)  Emperor Cheng (33–7 BCE) ,  Emperor He (r. 88–105 CE) ,  Emperor Shun (r. 125–144 CE) , Emperor Ling (r. 168–189 CE). was there slavery in this dynasty? Yes, Slaves comprised roughly 1% of the population.
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Han dynasty [SEP] Introduction
The Han dynasty () was the second imperial dynasty of China (202 BC–220 AD), established by the rebel leader Liu Bang and ruled by the House of Liu. Preceded by the short-lived Qin dynasty (221–206 BC) and a warring interregnum known as the ChuHan contention (206–202 BC), it was briefly interrupted by the Xin dynasty (9–23 AD) established by the usurping regent Wang Mang, and was separated into two periods — the Western Han (202 BC–9 AD) and the Eastern Han (25–220 AD), before being succeeded by the Three Kingdoms period (220–280 AD). Spanning over four centuries, the Han dynasty is considered a golden age in Chinese history, and influenced the identity of the Chinese civilization ever since.