The Red River Valley in eastern North Dakota is a productive farming region.
Plain area are most productive for farmaers
As farming came more productive, more people were able to leave the farms and to the city.
160 acres were inadequate for productive farming on the rain-scarce Great Plains
The plains west of the Mississippi are best for farming and ranching. This area is relatively flat and productive, provided there is sufficient water .
Because of irrigation farmers became more productive so other people went to different jobs
what is Asias 3 Ancient cultures and where there general area is
Engage in manufacturing.
w. Russia, Ukraine, Moldavia
The southern part of Siberia is the best for farming.
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Lake Baikal