Answer:
white dwarf
Explanation:
White dwarf
In a white dwarf due to high temperature and pressure the electrons of atoms are compressed to a very small space and this makes it impossible to add more electrons in the space as all the energy levels are previously filled and thus the electrons exerts a pressure which acts against the compressive force of the gravity in a white dwarf .
hence , the correct option is white dwarf .
The answer would be South America
The Sahara desert formed the southern boundary of the Roman Empire
Answer: the Khmer
https://en.m.wikipedia.org/wiki/Angkor_Wat
