Answer:
The physical feature that is most responsible for the settlement pattern in Egypt, where the population is concentrated along the Nile River, is the Nile River itself.
The Nile River is the longest river in the world and is considered the lifeblood of Egypt, as it has sustained life and civilization in the region for thousands of years. The river flows from south to north, providing water and fertile soil for agriculture along its banks.
Due to the arid desert climate surrounding the Nile, the river is the only reliable source of water in the region. Therefore, throughout Egypt's history, settlements and cities have developed along the Nile River and its delta, where the land is most fertile and suitable for agriculture.
This settlement pattern has been reinforced over time by the construction of irrigation systems and infrastructure that rely on the Nile's water supply. Today, over 95% of Egypt's population lives along the Nile River, making it the most densely populated region in the country. The Nile River continues to be a crucial factor in the social, economic, and cultural life of Egypt.