Part 1: Introduction to Economics
Part 2: Microeconomics
Part 3: Macroeconomics

2. How people interact

The first four principles discussed how individuals make decisions. As we go about our lives, many of our decisions affect not only ourselves but other people as well. The next three principles concern how people interact with one another.

Priciples 5: Trade Can Make Everyone Better Off

Priciples 6: Markets Are Usually a Good Way to Organize Economic Activity

Priciples 7: Governments Can Sometimes Improve Market Outcomes