A Mesolithic site along the Danube River that appears to have been used for ritual purposes involving the construction of trapezoid-shaped structures is called .

In 1915 the german geologist and meteorologist alfred wegener first proposed the theory of continental drift, which states that parts of the earth's crust slowly drift atop a liquid core. the fossil record supports and gives credibility to the theories of continental drift and plate tectonics.

What was the first official pair of sister cities?

The galápagos islands belong to which country