<Table> <Tr> <Th_colspan="2"> The Oregon Trail </Th> </Tr> <Tr> <Td_colspan="2"> The route of the Oregon Trail shown on a map of the western United States from Independence, Missouri (on the eastern end) to Oregon City, Oregon (on the western end) </Td> </Tr> <Tr> <Td_colspan="2"> Map from The Ox Team, or the Old Oregon Trail 1852--1906, by Ezra Meeker </Td> </Tr> <Tr> <Th> Location </Th> <Td> Illinois, Iowa, Missouri, Kansas, Nebraska, Wyoming, Idaho, Oregon </Td> </Tr> <Tr> <Th> Established </Th> <Td> 1830s by mountain men of fur trade, widely publicized by 1843 </Td> </Tr> <Tr> <Th> Governing body </Th> <Td> National Park Service </Td> </Tr> <Tr> <Th> Website </Th> <Td> Oregon National Historic Trail </Td> </Tr> </Table> <Tr> <Th_colspan="2"> The Oregon Trail </Th> </Tr> <Tr> <Td_colspan="2"> The route of the Oregon Trail shown on a map of the western United States from Independence, Missouri (on the eastern end) to Oregon City, Oregon (on the western end) </Td> </Tr>

What was the impact of the oregon trail upon the oregon country