@worldofstatisticstok: A city of 2 million people in one of America's driest deserts, with just 4 inches of rain a year. So how did Las Vegas happen? Underground springs, a railroad stop, legal gambling, and thousands of Hoover Dam workers built it. But the water that keeps it alive comes from one shrinking river. 🌊 Follow for more maps that explain the world 🌍 #lasvegas #nevada #hooverdam #lakemead #coloradoriver #geography #history #usa #maps #shorts