Three regions of westward expansion
{"Image DocumentName": "Three regions of westward expansion", "Image ImageDescription": "1) Oregon Territory \u2013shared w/ Great Britain. mountain men & trade. panic of 1837 = Oregon Fever mass migration: by 1845 there were 5,000 settlers in Willamette Valley. Oregon Trail = 5,000/year = 30, = 55,000.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}