Want this question answered?
China
Okay, you should first check the differences between Hinduism and Buddhism. Wikipedia is a good start to.
Because of the conflict between the countries
a civilization did not start Buddhism it was siddhartha gautama who originally started Buddhism!
india
In the eastern part of the Indian subcontinent some time between the 6th and 4th centuries BCE.
China
In maghada, India
500 BC
In India and Nepal.
india------its that simple
Gaya.