How has the machine for crushing stone had an impact on society?

Interesting fact, the stone crusher was made by Eli Whitney Blake, the nephew of Eli Whitney, the creator of the cotton gin. But back to the impact on society, it allowed them to make simple, cheap roads so that wagons wouldn't get stuck in mud all the time. He went even further and developed the design for railroads to create ballast.

it's lower nubia : ) good luck