West Point graduate Jefferson Davis fought for the U.S. in which 1840s conflict?

Which armored mammal's name is Spanish for "little armored one"? Which part of the U.S. Constitution begins "A well regulated Militia, being necessary to the security of a free State"? Which Welsh dog breed has a fox-like head and short legs? A were-beaver turns up in Thomas Pynchon's 1997 novel about which famous pair of surveyors? Frontier Days, a Western celebration, has been held each year since 1897 in which state capital? Which mountain range forms the western part of the central Appalachians? Which Western state's name is Spanish for "snow-covered"? Which Western won the Oscar for Best Picture of 1992?