how did the pyramids influence egypts development?

Answer 1

Other way around. The Egyptians believed that the body had to be preserved in order for the person to exist in the afterlife. As a result, they build large elaborate tombs for the Pharoahs to protect them through the afterlife. The largest of these are the great pyramids. Unfortunately, these large structures proved to be too conspicuous and were robbed. As a result later tombs were hidden.

Answer 2

improved their knowledge to find out pyramid is a Greek word !