Why Europe has indented coastline?

Europe has an indented coastline due to a combination of geological processes, including erosion and glacial activity. During the last Ice Age, glaciers carved out fjords and inlets along the Coastlines, creating the rugged, irregular shapes seen today. Additionally, the interplay of rising sea levels and the varying resistance of different rock types to erosion has further contributed to the coast's indented features. This complex history results in a diverse array of natural harbors and bays, enhancing Europe's maritime accessibility.