Vatican City
because its so small
Cattle ranching is big business in Brazil because beef is a very popular food. Brazil and Argentina have large pasture areas that are very good for raising beef cattle.
Cattle ranching and he work cowhands did promoted settlements of the plains so there were places to rest during a long cattle drive. As railroads grew, more settlements were established and cattle drives were a large part of the economy.
The Spanish Conquistadors and settlers came to North America, they brought their ranching traditions and livestock with them. Ranching had grown out of necessity in Spain as a way to manage large herds of grazing animals.
After the civil war cattle ranching become a good job because the demand for beef from cattle rose in the East.
Logging, Small and Large scale agriculture, cattle ranching, mining, hydroelectric dams, road building, commercial ranches and cattle ranches.
US cattle production statistics are reported annually by the Economic Research Service of the US Department of agricutlure. Go to: http://www.nass.usda.gov/ and simply click "Livestock and Animals" on the left navigation bar.
If by trails you mean cattle drives, the purpose was to move large herds of cattle to the nearest railroad stop so the cattle could be shipped to other parts of the country, usually larger cities in the east.
Cattle drives were for taking cattle to the stock pens for shipping by rail. Trucks replaced the rail stock yards and now they just go from large ranches to sale. Yet, there are small cattle drives that still do take place in some areas.
Barbed Wire.
If by trails you mean cattle drives, the purpose was to move large herds of cattle to the nearest railroad stop so the cattle could be shipped to other parts of the country, usually larger cities in the east.
Lots of good grass and moderate temps. and plenty of room.
Argentina holds that distinction. Such plains are known as the Argentinean Pampas.