Allied Forces won the fighting in North Africa in 1943. The Axis surrendered.
Turbidity. As your book/question states it is a measurement of cloudiness in water.
African Americans couldn't get education and if they did the budget was really low
The concept of the city-state was an important innovation and development (and invention) of Art because these cities, such as Uruk or Lagash, are some of the earliest known complex urban centers, and the settlement of people in them made necessary the construction of walls, temples, and burial sites that today are recognized as archeological vestiges of exceptional significance.
Furthermore, since the people that had settled in them had at their disposal food resources and an administrative class that took care of their needs and secured their welfare, artistic and craft production flourished in them.