Lower Egypt (Arabic: مصر السفلى Miṣr as-Suflā; Coptic: ⲧⲥⲁϧⲏⲧ, romanized: Tsakhet) is the northernmost region of Egypt, which consists of the fertile Nile Delta between Upper Egypt and the Mediterranean Sea, from El Aiyat, south of modern-day Cairo, and Dahshur. Historically, the Nile River split into seven branches of the delta in Lower Egypt. Lower Egypt was divided into nomes and began to advance as a civilization after 3600 BC. Today, it contains two major channels that flow through the delta of the Nile River – Mahmoudiyah Canal (ancient Agathos Daimon) and Muways Canal (Arabic: بحر موَيس, "waterway of Moses").