Look at Egypt from space at night, and you see something strange. Most of the country is dark and empty. But one thin line glows with light — a green, living line that runs from the south to the sea in the north. That line is the River Nile. And almost every person in Egypt lives right next to it.
A Huge Country, One Small Living Strip
Egypt is a huge country — about one million square kilometres. That is a lot of land. But around 95 percent of Egyptians squeeze into just two small areas: the Nile Valley and the Nile Delta. Together, those areas are barely five percent of the land. So 95 percent of the people live on about 5 percent of the country. The other 95 percent of the land is almost empty.
Why Is the Rest Empty? The Sahara
The answer is simple: water. The rest of Egypt is the Sahara Desert — one of the driest places on Earth. Almost no rain falls there. And the rule of life is hard: no rain means no farms, and no farms means no cities. People cannot live for long where nothing can grow and there is nothing to drink.
The River That Never Stops
The Nile is Egypt's only river that flows all year. It does not dry up in summer. For thousands of years, its yearly floods did something wonderful. The flood water dropped rich dark mud onto the fields along its banks. That mud was free fertiliser, delivered by the river itself, every single year. Farmers could grow food in the middle of a desert — as long as they stayed close to the river.
Cities Stacked Along the Water
So everything in Egypt stacked up along the water. Farms came first. Then villages. Then great cities. Cairo, one of the biggest cities on Earth, sits right where the narrow valley opens out into the wide Delta — like a doorway between the valley and the sea lands. And Alexandria guards the top of the Delta, on the Mediterranean Sea, where the river's land meets the ships and the ports.
A River With a Country Around It
That is why the map of Egypt looks the way it does. One green line of farms, towns and city lights, with empty golden desert on both sides. Egypt is not really a country that happens to have a river. It is a river — with a whole country squeezed around it!
Watch the video: Why Does Almost Everyone in Egypt Live Along One River? on YouTube. This article is the full written version of the video, in simple English. See all articles on the Blogs page and more videos on the Science & Tech page.