None, Mesopotama is now modern Iraq O_o.
Canaan
The piece of land that connects Egypt and Mesopotamia was formerly known as the Fertile Crescent. This region was a fertile area in the Middle East where some of the earliest civilizations emerged due to its favorable agricultural conditions.
Canaan
Land bridge.
land bridge Kooper
Mesopotamia
Sinai Peninsula
because of the Nile river providing such a huge impact on Egypt where as Mesopotamia did not have such a source of water to provide for their land and agriculture.
A narrow piece of land that connects two larger bodies of land is called an isthmus. The Isthmus of Panama essentially connects the continents of North America and South America.
isthmus
The piece of land that was once known as Mesopotamia is located between the Tigris and Euphrates rivers, primarily in present-day Iraq. It is often referred to as the "Cradle of Civilization" due to its significant contributions to human history, including the development of writing, agriculture, and urbanization. Egypt, located to the west of Mesopotamia along the Nile River, is a separate ancient civilization but shares historical connections with Mesopotamia through trade and cultural exchange.
The Tigris and Euphrates Rivers both flooded in Mesopotamia (they surrounded it), bringing silt (fertile soil) to the land.