Final answer:
Wind in North America typically blows downslope on the leeward side of a mountain, creating a dry 'rain shadow' area due to warming and drying of descending air.
Step-by-step explanation:
In North America, the wind typically blows downslope on the lee side of a mountain range. This phenomenon is part of what creates a "rain shadow" effect. When moist air from the ocean encounters a mountain range, it rises and cools, leading to precipitation on the windward side. As the air continues over the top and descends the leeward side, it warms and dries out, resulting in less moisture and precipitation on the lee side. This descending, warming wind is often referred to as katabatic.