The Cattle Kingdom is...

*
A. The area of the US where the only thing people ate was beef
B. The period of time where the US government overinvested in ranchers
C. The area of the US where free-grazing cattle ranching was prominent
D. The area of the US where cows could talk and created their own town

I think C.

The area of the US where free-grazing cattle ranching was prominent.