There are several reasons why the Great Freen Wall matters. It is good for the environment, it is good for Africa, it is good because it is expected to stop Africa’s desertification, and it is also good for those people in Europe who wish to put an end to the migration from the North African coast to the Southern European coasts.

To know more and have a better understanding of why the Great Green Wall matters, please check out this article :

https://www.theguardian.com/global-development-professionals-network/2017/jul/19/will-africas-great-green-wall-discourage-migration-to-europe