Why was naptata importamt to aincent egypt

It's economy was essentially based on gold, with 26th dynasty Egypt an important economic ally. ... Also, several ancient Egyptian deities were worshipped. The most important god was Amun, a Theban deity, and the Temple of Amun was the most important at Napata, located at the foot of Jebel Barkal.

(Source: Google)

the exclusive possession or control of the supply or trade in a commodity or service.