A caste system is a social hierarchy that divides people into different groups based on factors like occupation, social status, and family lineage. This system is often rigid, meaning individuals typically cannot change their caste, which can affect their opportunities in life, such as education and employment. One of the most well-known examples of a caste system is found in India, where society is traditionally divided into four main categories: Brahmins (priests and scholars), Kshatriyas (warriors and rulers), Vaishyas (traders and agriculturists), and Shudras (laborers and service providers). There are also many sub-castes, adding complexity to the system.