How did food surpluses help ancient societies develop?

Why is the improved education of girls so important, especially with regard to economics and health? what are the leading causes of death among teenage girls in africa and how are they tied to education?

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?

Countries trade with each other because resources are not evenly distributed across the globe. true or false