Do you think the green revolution has reached the united states?

Yes, I think the green revelation has reached the United States because "The Green Revolution, which was a period when the productivity of global agriculture increased drastically as a result of new advances, was a very important period in agricultural history."

site: https://study.com/academy/lesson/what-is-the-green-revolution-definition-benefits-and-issues.html

Explanation:

just took the test the answer is b.

because the center-south is called the heart of the country