The city-states of ancient Mesopotamia were independent cities constructed around temples and entirely self-contained within mighty perimeter walls.<span> City-states were unified with each other only by their shared use of the Sumerian language. They spent most of their time engaged in conflict over resources.</span>
D. They are not known for high birth rates
Answer:
Widely regarded as an economic miracle, China embraced widespread centralized economic reforms, averaging a GDP growth of 10% annually and lifting half of its 1.3 billion people out of poverty. China is projected to surpass the United States as the world's largest economy in the next decade.
