How did the inca farm the land in the andes mountain

The Incan civilization was mainly a farming society. The Incas took advantage of the soil, overcoming the weather and Andean terrain. They did not have domesticated animals suitable for farm work so they relied on manual tools. Their land was divided into 3 parts. One of the aristocracy, another for the religious establishment, and lastly for the farmers themselves who farmed for all of the groups.