' столу Player/ 2 3277 English ✓ JA Nag Garcia Why did Sumer's city-states have growing economies? Choose three answers, O City leaders saved their money instead of building expensive city walls and ziggurats, o Kings raised money by collecting taxes and then spent the money to improve the city, The use of agriculture and irrigation resulted in a surplus of food, City-states traded with each other for the things they needed, O City-states avoided going to war with each other. Done » Intro 5 of 8 3:32 contentViewers/FrameChain/Activity.