1. Public administrations (PAs) are bureaucratic organizations that implement legislation, develop public policies, enforce laws, and provide public services using public resources. 2. Administrative law governs the organization and management of PAs and is based on principles like prohibiting arbitrariness, ensuring financial sustainability, serving the general interest, and upholding the rule of law. 3. PAs exist at both state and regional/local levels and make decisions like issuing permits, awarding contracts, enacting regulations, and imposing penalties, always following established administrative procedures.