Masks are very important in traditional African societies because they are often used as central parts of rituals and ceremonial dances. These masks will represent a deity (a god/goddess in polytheistic religions) who are supernatural beings that are considered divine or sacred. These deities ensure a successful harvest and address tribal needs during time of war. Lastly, masks can also represent the spirits of deceased ancestors.
They modified it buy cutting down trees and building factories and buildings in order to grow plants and fruits more effectively in a more precise inviorment!