<Tr> <Td_colspan="2"> U.S. National Register of Historic Places </Td> </Tr> <Tr> <Td_colspan="2"> The Oregon Trail at Whitman Mission </Td> </Tr> <Tr> <Th> Location </Th> <Td> Walla Walla County, Washington, United States </Td> </Tr> <Tr> <Th> Nearest city </Th> <Td> Walla Walla, Washington </Td> </Tr>

What was the purpose of the whitman mission