Which two states border the most other states, with eight each?

From which country did the United States acquire Florida by treaty in 1819? Which Secretary of State arranged the purchase of Alaska, once mocked as his "Folly"? Which four states meet at the Four Corners? Which state is the only one that borders just one other state? Which state is divided into "parishes" instead of counties? Which state is divided into "boroughs" instead of counties? Which state has a unicameral (one-house) legislature? Which state has the only non-rectangular state flag, shaped like a swallowtail pennant?