The main factor that led to the development of the four major river valley civilizations was its closeness to rivers, which was a food source, its flooding allowed for fertile soil, allowed easy transportation and cities near them were easier to defend.
The fact that fewer people had to dedicate to the production of food allowed some of them to develop other activities, such as the construction of building and cities, metal working, trade and social organization. This led to a social division, the ones that worked and the ones that ruled, creating intricate systems of governments and religions that ideologically sustained those in power.
Well they tend to value modesty, you can tell because they traditionally wear loose and long clothes.
Answer: countries must engage in trade to get the goods they need to survive.
Explanation:
Earth's resources are not evenly distributed across the planet which means that some countries will have resources that other countries do not have but might need in order to produce goods and services.
The solution to this is to enter into trade agreements where a country is able to get the materials that it needs from other countries as well as sell materials needed by other countries to them.
Answer:
They used an alphabetic system of writing
Explanation:
