The geographic feature synonymous with flat and featureless land is called a plain. Plains are expansive areas of relatively level terrain, often found in various ecosystems, including grasslands and savannas. They play a crucial role in agriculture, as their fertile soils are ideal for farming. Plains can be found across the globe; some notable examples include the Great Plains in North America and the in South America. Their flatness and openness contribute to their usage for both agriculture and settlement.