Ancient Egypt's decline had certain effects on the territory, its population and its neighbours.
- Effects on the territory: The size of Ancient Egypt was reducing progressively as each phase of decline came. This was because each invasion led to the cutting off of part of Egyptian territory as vassal states broke away. The Libyans, the Syrians, the Nubians broke away whatever opportunity presented Itself. Trade was also suffered.
- Effects on the civilization: The creativity of Ancient Egypt declined as the state became weaker. As proof of this, the only remains being studied in Egypt date back to the period up to the reign of Rameses II. The weak rulers after the latter's reign did not hold the country firmly and did not encourage much creative work.
- Effects on neighbours: Some neighbours of Ancient Egypt grew bigger and stronger at the expense of Ancient Egypt. Good examples are Greece and Rome which exploited Ancient Egypt's weakness to engulf its territory into their empires at different periods.
- Cultural evolution: So many aspects of Egyptian culture were modified or changed as the country was conquered. For example, the Egyptians abandoned their belief in many gods (polytheism) and adopted the belief in one God as Christians and later as Muslims came in. Egypt became an important site of tourism and studies as scholars from Greece and Rome visited the country to gather knowledge