Why do the Iroquois call the muskrat Earth-driver?

The Iroquois refer to the muskrat as the "Earth-driver" because of its role in the creation myth involving the Earth. According to the myth, when Sky Woman fell from the sky, it was the muskrat that dove into the water and brought back a handful of soil, which it placed on the back of a turtle, ultimately creating the Earth. This act symbolizes the muskrat's vital contribution to the formation of land and the interconnectedness of all living beings within their cosmology.