The "lower" and "higher" literally reflects that it's located lower than the upper Egypt. This was made obvious by the direction of the water flow in the Nile: from higher, "Upper" regions to the "lower" regions; hence the name.
Industry and technology became one of the biggest money-makers and most important producers in the northeast.
Answer:
A nation-state.
Explanation:
A nation-state is a sovereign polity or state that has a specific territory with clearly defined borders. It also has citizens, laws, and government that presides within that premise. In other words, a nation-state is when a whole nation has a state of its own, predominantly occupied by a single cultural section of people.
An example of a nation-state is Japan, China, North and South Korea, Portugal, etc.
Probably would depend on your religion. A Christian would say Jesus, but a Buddhist would say Buddha.