Across
- 1. National park that's also a UNESCO site and biosphere reserve
- 3. Type of economy left by colonizers
- 4. River estuary near Buenos Aires
- 6. Semi-arid region south of Sahara
- 7. Border defined by the 49th parallel
- 9. U.S. state with the longest coastline
- 10. Reef along Central American coast
- 11. Rift with fossils and volcanoes
- 12. Land deal that doubled U.S. size
- 14. Famous canal country
- 15. Major mountain range
- 17. Conference that divided Africa
- 18. key export crop historically
Down
- 2. Treaty that split continent
- 4. Flat, grain-producing region
- 5. Natural disaster zone affecting farming
- 6. Large geological area rich in minerals
- 8. Region impacting claim to Northwest Passage
- 13. Rainforest under threat
- 16. Officially bilingual province
