Question

when and where the first Buddha sangiti happened?​

Answer 1

First Buddha Sangiti happended in 400 BC .

It was held soon after the Mahaparirvana of Buddha .

Answer 2

Held soon after the mahaparinirvana of the Buddha around 400 BC under the patronage of king Ajatshatru with the monk mahakasyapa presiding at rajgriha in the sattapani cave.