Why Egypt's did not suffer from invasions?

Answer 1

Actually, ancient Egypt did have several invasions. The first major one was in the 15th dynasty when they were were invaded by the Hyksos. This created such an upheaval that this period is called the Second Intermediate period. The ancient Egyptians also endured invasions and battles between the Libyans, the Nubians, and other Asiatic countries like the Hitties, the Persians, Assyrians. In the later period let us not forget the Greek invasion by Alexander the great and then the last great battle between Cleopatra and Antony and Rome which brought an end to the Ancient Egyptian empire.