What are broad platforms cut into steep slopes used for planting crops?

The broad platforms cut into steep slopes used for planting crops are called terraces.

Terraces are a form of terracing, which is a method of farming that involves creating flat platforms on sloped land. This practice helps to:

* Prevent soil erosion: Terraces slow down the flow of rainwater, preventing soil from being washed away.

* Improve water retention: Terraces allow rainwater to be absorbed into the soil, improving water availability for crops.

* Increase usable land: Terraces convert steep, unusable land into arable land, increasing agricultural productivity.

Terraces are commonly found in areas with hilly or mountainous terrain, where traditional farming methods would be ineffective.