This document defines social stratification as the division of society into hierarchical social classes. It identifies characteristics such as status, wealth, and prestige as social desirables that determine social mobility and stratification. Social mobility refers to the ability of individuals to change their social class, either upwardly or downwardly, within systems of stratification like class, caste, estate, or slavery. Inequality in areas like capital, ethnicity, and disability status can have consequences like disparities in life chances and outcomes. Responses to inequality range from allowing it to continue to socialist or reformist approaches that redistribute resources to address injustice.