- wheat: Wheat is one of the most common grains grown throughout the world. It is also one of the oldest known crops, and can grow in a wide range of soils and climates.
- rice: rice is the most popular crop in Asia and thrives in warmer climates.
- corn (maize): corn originated in the Americas and was a popular import in Europe, where it is often used as animal feed.
- soybeans: soybeans have become more popular as food processing technology has developed more uses. Soybean oil has many food and industrial uses