Why were settlements started in places like Vegas and Pheonix if they weren’t connected to a river that connected to the ocean like the Mississippi River for trade and had no viable farmland?

Question

Why were settlements started in places like Vegas and Pheonix if they weren’t connected to a river that connected to the ocean like the Mississippi River for trade and had no viable farmland?

In: 4650

Answer 1

The invention of air-conditioning played a huge roll in it. All across the southwest, places that were insufferable became livable.