I don't quite understand your question, but I'll give it a try. Economics is the study of people's unlimited wants while only having limited resources. So people make money in economics by working for big corporate stores and companies to help them choose a price for a product or service. This is only one of the people can make money in economics. Hopefully this is what you were asking.
The modernization of US cities has caused a reduction in overall river pollution. The development of large farms has polluted the river through waste runoff. The use of the river for shipping has stayed relatively the same since 1800. The decrease in fishing in the river has led to a shortage of seafood products.
Because The Sahel was a fertile band, there was more agriculture, trade, and permanent civilization. The trade route established many colonies in order to bring gold out Africa and in to the Arabic world.
Bantu as a common language, animism as a common religion, religion economics and history intertwined, and trade routes.
Advantages: unity, trade partners.
Path from the Arab world to the western world of Africa for gold.
The further south you get, more agriculture develops.
Herds are going to be there in the south
Allows for more Sedentary life in the south.
They raised money using war bonds which are issued by the government
