1. polder
2. fjord
3. ecosystem
4. aqueduct
5. city-state
6. European Union
7. Reformation
8. tariff
9. sovereignty
10. nationalism
PreAP
11. Renaissance
12. Middle Ages
13. Industrial Revolution
14. Common Market
15. assimilate
2. fjord
3. ecosystem
4. aqueduct
5. city-state
6. European Union
7. Reformation
8. tariff
9. sovereignty
10. nationalism
PreAP
11. Renaissance
12. Middle Ages
13. Industrial Revolution
14. Common Market
15. assimilate