1 year, obviously. If you wanted to know how far apart are 500 BC and 501 AD, the answer is 1001 years.
The Han dynasty ruled ancient China from 220 BC to 220 AD.
The 3rd century.
210
1, 3, 5 and 15
Tertullian 160-220 ad
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It was created in 25 bc and ended in 220 ad.
The Han Dynasty was the greatest dynasty in Chinese history. It lasted from 206BC to 9 AD, then from 22 AD to 220 AD. It had the most influence to today China's culture.
426 years
the eventual fall of the Han dynasty
210, 240, 270, and 300