In the mountainous regions of east Asia, there was great soil, but no flat land to farm on. The farmers from China created terraces (above picture) so they can farm their rice. These are called rice fields, but more commonly known as rice paddies.
The Nile River flows North towards the Mediterranean Sea. At the mouth of the massive river is the Nile Delta. It has very fertile soil. It has been farmed for over five thousand years. Back in the time of Ancient Egypt, the delta flooded annually, nourishing the crops since the dry climate in the Sahara was very harsh.
Maize is the great ancestor of the modern corn we have today. In central america, this was a very important crop. Mayans and all the other ancient mesoamerican civilizations domesticated the Maize and became the corn we know and love today.
The Nile Delta
This here is a satellite photo of the Nile Delta located in northeast Africa. The Egyptian empire was built around the stretch of the Nile River so they could farm it.