A vivid tableau of the American conquest of the Pacific Coast "With Broughton's expedition, the Americans and the British had posted competing claims to a vast expanse of the Pacific Northwest. The area in contention would encompass all of present Oregon and Washington and parts of Idaho, Wyoming, Montana, and British Columbia. Robert Gray, the dour Yankee trader, and William Broughton, the obscure British naval officer, nonentities both, sailed away...