If its the region of the united states then I'll say the west. The west has so many native tribes it's hard to count. States like Utah,Montana,Wyoming make up the majority of the influence.
<span>I think the correct answer from the choices listed above is option B. It is the atmosphere and the hydrosphere the two parts of the Earth system that a climatologist is involved. Hydrosphere is the oceans and other water bodies. While, the atmosphere plays a major role in the cycle of water here on Earth. So, the two goes together.</span>
An atlas - an atlas is a book containing lots of maps and information relating to both human and physical geography :)