Examples
- A kid who shares their lunch with a friend gets more treats from the teacher.
- A toy store that lets everyone buy toys gets more customers and stays open longer.
- When kids take turns playing on the swings, everyone has fun.
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See also
- Why Do We Have Different Kinds of Taxes?
- Why Do Prices Change So Much?
- Why Do We Use Money Instead of Bartering?
- Why Do Prices Go Up So Much When There's a Shortage?
- Why Do We Have Different Kinds of Coins?