[packagingguy]

You cannot grow row crops everywhere. Cattle are essential for economies of areas where raising plant based food is uncompetitive.

[Governor Dinwiddie]

#3: "You cannot grow row crops everywhere. Cattle are essential for economies of areas where raising plant based food is uncompetitive."

Precisely. For example you can't grow much on the high plains of Wyoming and Montana. You are lucky if you can manage much of a kitchen garden with the short growing season. But cattle and buffalo are perfect for this region.