Across
- 2. the first non-Native American woman to climb Mt. Rainier in 1890
- 4. An entrepreneur and a politician, regarded as a founder of the city of Seattle
- 5. An American explorer, soldier, Native American agent, and territorial governor
- 7. A British officer known for his 1791–95 expedition, which explored North America's northwestern Pacific Coast regions
- 10. A Greek maritime pilot in the service of the King of Spain, Philip II
- 11. The 19th-century belief that the expansion of the U.S. throughout the Americas was both justified and inevitable
- 14. A U.S. policy that opposed European colonialism in the Americas
- 16. An original white settlement in what was to become the city of Seattle
- 17. A meeting in the Pacific Northwest between the United States and sovereign tribal nations of the Cayuse, Nez Perce, Umatilla, Walla Walla, and Yakama
- 20. Polk called for expansion that included Texas, California, and the entire Oregon territory
- 21. A confrontation between the U.S. and the U.K. in 1859
- 22. Estimated 700 to 1,000 emigrants left for Oregon. They were led initially by John Gantt
- 23. An American businessman, real estate developer, investor, inventor, writer and lieutenant colonel in the Spanish–American War
- 24. A U. S. Army post in the Washington Territory
Down
- 1. The first governor of Washington State
- 3. A mountain pass in Washington State
- 6. A Lemhi Shoshone woman who helped the Lewis and Clark Expedition at 16 years old
- 8. A Spanish Basque explorer of the Pacific Northwest
- 9. A Suquamish and Duwamish chief
- 11. An indigenous group whose homeland is in Canada and parts of the U.S.
- 12. The encampment of the Lewis and Clark Expedition
- 13. The Convention respecting boundaries of slaves between the U.S. and the U.K.
- 15. an American career Army officer and politician, who served as governor of the Territory of Washington from 1853-1857
- 18. A political dispute between the Spanish Empire, the Kingdom of Great Britain, and the fledgling U.S. that took place during the summer of 1789
- 19. A U.S. statute that permitted the entrance of Montana and Washington into the United States of America
