What is the capital of the German state of Lower Saxony?

What is the capital of the German state of Brandenburg? Potsdam is the capital of which German state? What is the capital of the German state of Hesse? Wiesbaden is the capital of which German state? Hanover is the capital of which German state? What is the capital of the German state of Mecklenburg-Vorpommern? Schwerin is the capital of which German state? What is the capital of the German state of North Rhine-Westphalia?