The answer to the second question is : Minnesota - there is a small corner struttuing out into Canada from the long straight border running across Washington, Montana, North Dakota and Minnesota.

For the fourth, I venture: Great Britain (Laurie Island, of the South Orkneys)

I suggest we keep only one question open; whoever anwered this question transfers the right to ask the next one to the poster who got her/his question right. It works extremely well in the Ultimate Astronomy Quiz. On the other hand, shooting off anwers and asking the next round of questions without waiting for confirmation makes it very difficult to keep track, as some answers wil surely be disputed.

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Non sunt multiplicanda entia praeter necessitatem.