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Contents: What is the economy? -- Why do people need to earn money? -- Has the way that people earn money changed? -- What has changed since 1900? -- How do people earn money now? -- Who works in services? -- How do public sector workers earn money? -- Does everyone work for someone else? -- Who decides how much people earn? -- What happens when people can't earn money? -- Why does all this matter to me? -- In focus : Who are the richest people in the world? -- Money facts Summary: How do we earn money? All types of industries and sectors are explored in this title, as well as how earning money has changed from past to present. (Publisher) Understanding money Infosearch