WORLD CIVILIZATION

Detailed explanation-1: -Barley is the fourth most important cereal crop in the world after wheat, maize, and rice. Although generally a temperate crop, barley is also grown in many tropical countries, typically by poor farmers in hostile, dry, cool environments.

Detailed explanation-2: -Definition: Barley is primarily a cereal grain popularly known as jau in India. It is the fourth most important cereal crop after rice, wheat and maize.

Detailed explanation-3: -Barley and wheat are both important domesticated crops belonging to the grass family. Wheat is ground into flour before use in baked goods and other foods, while barley is mostly eaten in whole grain or pearled form.