What led to the fall of the ghanian empire?

The Ghana Empire crumbled from the 12th century CE following drought, civil wars, the opening up of trade routes elsewhere, and the rise of the Sosso Kingdom (c. 1180-1235 CE) and then the Mali Empire (1240-1645 CE).

Explanation:

A landform is a feature on the Earth's surface that is part of the terrain. Mountains, hills, plateaus, and plains are the four major types of landforms. Minor landforms include buttes, canyons, valleys, and basins.

Tectonic plate movement under the Earth can create landforms by pushing up mountains and hills. Erosion by water and wind can wear down land and create landforms like valleys and canyons. Both processes happen over a long period of time, sometimes millions of years.

It took 6 million years, in fact, for the Colorado River to carve out the Grand Canyon in the U.S. state of Arizona. The Grand Canyon is 446 kilometers (277 miles) long.