How does the Niger River affect the land and people?

It makes the soil rich and so that helps the crops grow. That means there is more crops for the people who live there and nobody will go hungry People from other places will then want to go to the niger river because it is so successful and a good place to live. There will also be more jobs so people will not go jobless and more money will be made because they will sell the crops or food that they do not need.