On Burger King v. Rudzewicz case

Case Questions 1. Why did Burger King sue in Florida rather than in Michigan? 2. If Florida has a long-arm statute that tells Florida courts that it may exercise personal jurisdic tion over someone like Rudzewicz, why is the court talking about the due process clause? 3. Why is this case in federal court rather than in a Florida state court? 4. If this case had been filed in state court in Florida, would Rudzewicz be required to come to Florida? Explain