Why does Jutland make up most of Denmark’s land area?

Jutland makes up the majority of Denmark’s land area because it serves as the country's primary mainland connection to continental Europe. While Denmark consists of an archipelago of more than 400 islands, the Jutland peninsula extends northward from Germany to form the continental portion of the nation, accounting for over two-thirds of its total land area.12

The physical landscape of this region was significantly shaped by the Weichsel glaciation during the Pleistocene Epoch. As the ice sheets retreated, they deposited materials that created the diverse terrain of the peninsula, ranging from the flat, sandy western regions to the fertile loam plains and hills of the east.3