According to the text, why are the world's most important ancient cultures called "River Civilizations?"

well they were called the river civilization do to the fact that there were rivers that gave them fresh water. they were also called the river civilizations because rivers help to create good farmland so because there were by the water they had better crops and back then the better the crop the more you would get when you trade so they were called the river civilization do to the fact that they used the revisers near by as there way of life

Explanation:

sorry if im late and tell me if im wrong also i did not know if you needed more then one paragraph so i did one

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.