 <translate> The important part for answering this question is: Charge conservation was first proposed by British scientist William Watson in 1746 and American statesman and scientist Benjamin Franklin in 1747, although the first convincing proof was given by Michael Faraday in 1843. So the final answer is first proposed by British scientist William Watson in 1746 and American statesman and scientist Benjamin Franklin in 1747 , although the first convincing proof was given by Michael Faraday in 1843. <yor> Ohun pàtàkì tó yẹ kó o mọ̀ nípa rẹ̀ ni pé: William Watson, onímọ̀ sáyẹ́ǹsì ọmọ ilẹ̀ Gẹ̀ẹ́sì ló kọ́kọ́ sọ pé ẹ̀mí èèyàn kì í gba ẹ̀mí èèyàn láyè lọ́dún 1746, Benjamin Franklin tó jẹ́ olóṣèlú àti onímọ̀ sáyẹ́ǹsì ọmọ ilẹ̀ Amẹ́ríkà ló sì sọ bẹ́ẹ̀ lọ́dún 1747, bó tilẹ̀ jẹ́ pé Michael Faraday ló kọ́kọ́ sọ ẹ̀rí tó fìdí múlẹ̀ pé ẹ̀mí èèyàn kì í gba ẹ̀mí èèyàn láyè lọ́dún 1843. Nítorí náà, ọ̀gbẹ́ni William Watson, onímọ̀ sáyẹ́ǹsì ọmọ ilẹ̀ Gẹ̀ẹ́sì ló kọ́kọ́ sọ ìdáhùn sí ìbéèrè yìí lọ́dún 1746, nígbà tí ọ̀gbẹ́ni Benjamin Franklin, ọ̀gbẹ́ni olóṣèlú àti onímọ̀ sáyẹ́ǹsì ọmọ ilẹ̀ Amẹ́ríkà sì sọ ìdáhùn náà lọ́dún 1747, bó tilẹ̀ jẹ́ pé Michael Faraday ló kọ́kọ́ fúnni ní ẹ̀rí tó lẹ́sẹ̀ ńlẹ̀ lọ́dún 1843. 