I believe the term you are looking for is called an agora.
That is a philospher. Someone who thinks they can be God. Gosh.
Answer: it is the rock formed within the rocks crust.
Explanation: Rocks formed from magma are called igneous rocks. Intrusive igneous rocks form when magma cools inside the Earth. Rocks that form from magma erupting onto the Earth's surface are called extrusive igneous rocks. Extrusive igneous rocks have little to no time to crystallize and, as a result, the crystals are very small or microscopic.
There are 7 characteristics of Egypt.
1.Stable food supply
2.social structure
3.government
4.religion
5.culture
6.written language
7.technology.