The document describes the five main economic sectors: primary, secondary, tertiary, quaternary, and quinary. The primary sector involves extracting raw materials from the earth. The secondary sector transforms raw materials into finished goods through manufacturing and construction. The tertiary sector provides services to individuals and businesses. The quaternary sector involves knowledge-based and intellectual activities like education, research, and information technology. Finally, the quinary sector involves complex decision-making and management at the highest levels of government, science, and culture.