Final answer:
The 'Demotic Phase' falls within the Middle Kingdom Period of ancient Egypt and refers to a later stage of the Egyptian language characterized by a simplified script. Demotic became predominant during the Late Period and was later replaced by the Coptic script.
Step-by-step explanation:
The 'Demotic Phase' of the Egyptian language falls within the Middle Kingdom Period of ancient Egypt, which lasted from around 2040 BCE to 1782 BCE. During this period, powerful rulers reestablished centralized control in Egypt, leading to a second age of Egyptian greatness. The Demotic Phase refers to a later stage of the Egyptian language, characterized by a simplified script that was used for everyday documents and records.
Demotic was introduced alongside the traditional hieroglyphic and hieratic scripts, offering a more accessible writing system for common people. It became the predominant script during the Late Period of ancient Egypt, which followed the New Kingdom. The Demotic script was eventually replaced by the Coptic script when Egypt became a Christian nation in the 4th century CE.