| Type | Political and economic union |
| Dates | 15th to 18th century |
| Goals | Internal reform • Religious toleration |
| Decline | Internal disputes • External threats |
| Leaders | Various noble leaders, princes, and dukes |
| Location | |
| Member states | Germanic principalities • Slavic principalities • Hungarian central states |
| Governing body | Diet |
| Modern-day territories | Germany • Austria • Czechia • Poland • Slovakia • Slovenia • Hungary |