This is known as the first intermediate period, about 100 years of ancient Egyptian history, which is marked by weakness and turmoil. Some people reckon that they couldn't control the floods, that there was starvation, that there was famine, but for whatever reasons, they're lost in the Nile for about 100 years. And then at the end of those 100 years, new leaders arise. This is called the Middle Kingdom. The Middle Kingdom around 2080 BCE to about 1640 BCE, for about 500 years they regained control, and they do move on. They build a canal to the Red Sea, which is going to open up new trading routes. They figure out how to drain the swamps of the upper Nile in order to increase their farmland.