How can you appreciate John Dalton for proposing his atomic theory?

Explanation

1) We know ,development of science and technology is a combined effort of Roma scientist.
2) The zeal to know or discover something new, leads the scientist for their discoveries.
3) One of such is the atomic theory proposed by Dalton, based on Lavoisier's law of conservation of mass and Proust's law of constant proportions.
4) Dalton said atom is indivisible.
5) This proposal lead to discover many new things by various scientists and to unveil the complete structure of atom.
6) Hence Dalton's contribution is highly appreciable.