Because of the green revolution, the average u. s. cornfield increased its yields by during the 20th century.

Because of the green revolution, the average u.s. cornfield increased its yields by fivefold during the 20th century.
The Green Revolution was of utmost importance for farmers, and especially those who worked with corn, because it brought immense profits to them by providing them with 5 times as many corn than before.

It is state and federali really hope this  

That is true , instead try to have a sit down talk with them