Answer:
Work breakdown structure is a structured approach for organizing all the project work and deliverables into logical groupings and subdividing them into more manageable components to help ensure all work and deliverables are complete until they are sub divided and can be assigned to a single person.
This is done so the work load can be converted into manageable sections which makes it easier to conduct logistical and managerial tasks. It also ensures the completions of task effectively and efficiently.
The Tectonic Forces is responsible in that creation
It's the convection currents that happen in the asthenosphere part of the Earth Crust , causing the African Plates to Diverge and continuously produce Rifts that will eventually formed a rift valley
This process can take millions of years