What was the most common impact of new inventions on American life?

They increased costs and provided a basis for family disputes.

They created problems, increased pollution, and made life harder.

They reduced costs, but made life more difficult.

They made life easier, more productive, and more profitable.

D

Explanation:

It was on my quiz I got it right

They made life easier, more productive, and more profitable.

As new inventions were introduced to America, they made creating products much more convenient. In factories, machines of mass-production, such as the conveyor-belt and the cotton gin, made factory-produced products much easier and faster to make than by hand. Within homes, other inventions allowed for home life to run easier and smoother as household inventions made their way into American homes.