Just to get the facts straight on Scandinavian history and politics;
Norway declared independence on May 17 1814 not from Denmark, but from Sweden. After the alliance of Denmark-Norway lost the war at the side of Napoleon, Denmark was forced to cede Norway to Sweden. Immediately after Norway declared independence, under the Danish crownprince Christan Frederik.
As for Muslim immigration into Denmark, it was founded with the most liberal immigration law in the world in 1983. Introduced by the Conservative government. The anti-immigration policy was introduced by Pia Kjaersgaard and the Danish Peoples Party in 1998, to the opposition of the entire political establishment (left+right). The development in the Netherlands follows comparable patterns.
