The Gift of the Nile

Historian Herodotus called Egypt "the gift of the Nile," and he was not exaggerating. Without the annual flood depositing nutrient-rich silt across the floodplain, Egypt would be desert. The flood arrived with clockwork regularity every summer, enabling one of the first agricultural calendars.

The Nile made Egypt rich enough to build pyramids and develop writing. Its predictable floods let farmers plan harvests reliably. All major cities were built along its banks. Egyptian civilization lasted over 3,000 years, largely because the Nile never stopped giving.