The tectonic plates whose turbulent interactions formed Iceland, are the Eurasian tectonic plate and the North American tectonic plate. Spanning the Mid-Atlantic Ridge, Iceland emerged as a result of the divergent, spreading, boundary between these two plates and the activity of Iceland´s own hotspot or mantle plume.
Why? Dodo birds give it away, Dodo birds was hunted to extinction because there was no competition of where they lived for their coats and it was very easy to hunt them since they had no self defense.