Standard of living refers to the level of wealth, comfort, material goods, and necessities available to a certain socioeconomic class or geographic area. It encompasses various factors such as income, employment, class disparity, poverty rate, and housing quality, which together provide a comprehensive picture of the economic and social well-being of individuals or communities. Understanding the standard of living is crucial in analyzing the impact of global conflicts and the ongoing changes throughout the 20th and 21st centuries.