Dear Student,
Mountains, hills, plateaus, and plains are the four major types of landforms.
The processes that took place to form landforms are:
1. Tectonic plate movement
Under the Earth ,the movement of tectonic plates led to the formation of landforms by pushing up mountains and hills.
2.Erosion
Erosion caused by water and wind can wear down land and results in landforms like valleys and canyons. Both processes happened over a long period of time, I,e millions of years.
Regards