👉 Substantialism is a political philosophy that emphasizes the importance of government intervention in economic affairs to prevent or mitigate the negative effects of market forces. It advocates for policies and programs designed to promote social welfare, reduce income inequality, and ensure that public goods are provided at reasonable prices. The term "substantialism" comes from Latin and means "large," as it focuses on the importance of government involvement in economic affairs. This philosophy is often associated with socialist or communist ideologies, which emphasize the need for