The Mongols, a tribe of Nomads from Central or North Asia, who were ruled by Genghis Khan at the time.
The vast pollution which occurs globally can have a significant impact on air quality on a local scale. The reason for this is quite simple: polluted air can easily get trapped beneath a cloud cover, or be literally "blown" away to other locations, and when much polluted air gets accumulated, it can have devastating heath effects on a local population, not just to humans, but to animals and plants as well. Overall, the vast global pollution can effect the smallest of regions on an unprecedented scale.
I would say B) On a Cattle ranch. Ranching is a business whereby you are raising livestock.
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Europe is composed of 50 SOVEREIGN or self-governing States.
