<span>Denmark is a goo example of a nation-state because nearly all Danes speak Danish and live in Denmark. So in this case the correct answer would be C. Nearly the entire population are ethnic Danes who speak Danish.</span>
Triangles, squares and hexagons are the only regular shapes which tessellate by themselves. You can have other tessellations of regular shapes if you use more than one type of shape. You can even tessellate pentagons, but they won't be regular ones.