Kiel was the capital of Schleswig-Holstein and this was a region which had been the cause of many disputes over a long period; in the 19th century this was known as the Schleswig-Holstein question.
Kiel ay ang kabisera ng Schleswig-Holstein at ito ay isang rehiyon na may been ang sanhi ng maraming mga alitan sa loob ng mahabang panahon; sa ika-19 siglo na ito ay kilala bilang ng Schleswig-Holstein katanungan.