The document summarizes the three main economic sectors: primary, secondary, and tertiary. The primary sector involves extracting raw materials directly from nature, such as through fishing, farming, mining, and forestry. The secondary sector transforms raw materials into manufactured goods like food, cars, chemicals, and electronics. The tertiary sector provides services and includes industries like health, education, trade, tourism, transport, and financial services. The primary industries important to Spain's economy include agriculture like olives, grains, tomatoes and livestock farming of pigs, cows, sheep and goats.