One difference between work in the 18th and 19th century

18th century ⟩ In 18th century no much development activities were held .

19th century ⟩ In 19th century in comparison of 18th century more development activities were done .

hope it is helpful to you ☺️

the answer to this question is the third option. hope this

i dont know the answer sorry but if i knew it i would of told you