Because Petra is located in the most important trade route in the world at that time. In addition, the city is also an important source of fresh water, which is later known as Wah! Musa or Moses Valley.
Petra is the most important trade routes of the world at that time. In addition, the city is also a major source of fresh water, which was later known as the Wadi Musa or Valley of Moses.
Because the most important trade routes, Petra located of the world at the moment. The city is also an important inland waters which was later called the wadi Musa or Moses, valley