NARRATOR: Sectors of industry relate to what businesses do. Primary sector businesses exploit or extract raw materials, like trees, fish, and oil. Businesses in the secondary sector manufacture ...

While many modern companies develop and use technology as a key part of their businesses, IT companies' primary business ... railroads are three examples. The industrial sector tends to perform ...

Zoe Hansen / Investopedia Similar businesses are grouped into industries based on the primary ... business operations. However, sectors are broader than industries. For example, retail trade is a ...