A Maya city from the Classic Period usually consisted of a series of stepped platforms topped by masonry structures, ranging from great temple-pyramids and palaces to individual house mounds. These structures were in turn arranged around broad plazas or courtyards.
Many African countries are anyway struggling with money, and receiving a lot of foreign help. Having debt only makes their financial situation worse and increases the need for foreign help. So in a way, richer countries give money to African countries so that the African countries can give it back- this is not optimal.
Another reason is that a stronger Africa could buy more goods from other countries, and the economy of other countries would increase, too.
Great plains is your answer looked it up