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| THEN | NOW | HOW | |
|---|---|---|---|
| Catastrophes | then | now | how |
| Cities | then | now | how |
| Crime | then | now | how |
| Culture | then | now | how |
| Economy | then | now | how |
| Energy | then | now | how |
| Food | then | now | how |
| Imperialism | then | now | how |
| Internationalism | then | now | how |
| Internet | then | now | how |
| Organization | then | now | how |
| Transportation | then | now | how |
| Violence | then | now | how |
| Women | Wom-then | Wom-now | Wom-how |
| Work | Work-then | Work-now | Work-how |
| Youth | You-then | You-now | You-how |