Because they were different from other city-states
I believe that is the correct answer
<span>As for many Americans, the Second World War boosted the economic prospects of many African Americans. In particular, war industries created a demand for labor, which many black workers, including black women, were able to fill. Thousands of African Americans moved north to industrial centers, but also to places like California, which saw tremendous population growth during the war due to the war industries that developed there.</span>
I think you forgot to give the options along with your question. I am answering the question based on my research and knowledge. "laissez-faire economics" is the term that is used to describe the <span>belief that capitalism operates best with the least government regulation. I hope that the answer has helped you.</span>