Why are cattle ranchers generally found in northern mexico?

I think the question is asking why they're not find in southern Mexico. Southern Mexico does not have the proper climate, as it's mostly filled by Jungles (Chiapas, Yucatan, etc) - and cattle would have problems going through the jungle. Cattle needs plains with grass, and this is rather found in the north of Mexico, which is not as humid as the south

Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.