Question

At which place buddha delivered his first sermon

Answer 1

The sermon Buddha gave to the five monks was his first sermon, called the Dhammacakkappavattana Sutta. It was given on the full-moon day of Asalha Puja. Buddha subsequently also spent his first rainy season at Sarnath at the Mulagandhakuti.

Answer 2

Sangha, the community of the enlightened ones, was established quite a while back.

The sermon, Buddha provided for the five priests, was his first sermon, called the Dhammacakkappavattana Sutta.

It was given on the full-moon day of Asalha Puja. Buddha in this way additionally spent his first rainy season at Sarnath at the Mulagandhakuti.

Sarnath India is the place where Buddha gave his first sermon.

It was at Sarnath Buddha delivered his first sermon to his devotees for whom he left Bodh Gaya.