Plz help i will really aprecciate it and will give Explain the concept of natural selection and describe how it was applied by Social Darwinism to society and the economy.

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .