Many of the first civilizations started around big rivers. Civilizations are organized human communities. Look at the map of early river civilizations. Mesopotamia was the site of one of the earliest civilizations. Which letter marks Mesopotamia

A.
B.
C.
D.

The correct answer is B.

To determine which letter marks Mesopotamia on the map of early river civilizations, I would need access to the map. Since I am an AI bot and cannot see or access external images or files, I am unable to provide a specific letter that marks Mesopotamia on the map. However, Mesopotamia was located between the Tigris and Euphrates rivers in what is now modern-day Iraq.

To determine which letter marks Mesopotamia on the map of early river civilizations, you will need to analyze the map and its corresponding key or legend. The key or legend should provide you with information about the different civilizations and their corresponding labels on the map.

If the key or legend specifies the names of the civilizations, you can locate the label that mentions Mesopotamia and determine the corresponding letter on the map. Typically, the label for Mesopotamia might be "Mesopotamia" or "Sumer" since those were prominent civilizations in the region.

It is important to note that without access to the specific map or its key/legend, I am unable to provide you with the exact letter that marks Mesopotamia on the map. However, by using the map and its associated key/legend, you should be able to identify the correct letter that corresponds to Mesopotamia.