Because they didn't have rivers or mountains to ward off enemies:] i think not a 100% sure?
Sumerian rivers, primarily the Tigris and Euphrates, flooded in the spring due to the melting of snow in the Zagros Mountains and seasonal rains. As temperatures rose, the increased water flow from the mountains combined with rainfall led to overflowing rivers. This flooding, while sometimes destructive, also deposited nutrient-rich silt onto the surrounding farmland, benefiting agriculture in the region. The Sumerians learned to manage these floods through irrigation and levee systems to harness the water for their crops.
Actually many rivers run north in North America. Water has no sense of direction. If flows downhill by gravity. Most rivers east of the Rocky Mountains do flow in a southerly direction because the elevation is lower to the south and they are flowing toward the Gulf of Mexico. Source: Riverlorian.com
Um, Marcus Rivers is a fictional character... Go figure.
There are two rivers that feed into the land of Mesopotamia. They are the Tigris and Euphrates rivers. They are important because the two rivers brought silt, a rich soil which helps plant grow extremely well. I hope my answer helped! :)
Austria
Austria!!! Now go get those oodles
rivers mountains streams oceans valleys hills plains prairie
Who seeks new countries , rivers and mountains
The Mackenzie Mountains are a mountain range forming part of the Yukon-Northwest Territories boundary between the Liard and Peel rivers. Nahanni National Park Reserve is in the Mackenzie Mountains.
what are the main rivers, lakes, and mountains in texas
They can erode mountains.
probably rivers though
Most rivers begin in the Appalachian mountains or rivers flow into the Gulf of Mexico.
The rocky mountains are the greatest source of rivers in the west. The rocky mountains form the continental divide.
a physical map shows mountains and rivers.
what rivers lakes and montains