Danube River<span>, </span><span>German </span><span>Donau, </span><span>Slovak </span><span>Dunaj, </span><span>Hungarian </span>Duna,<span>Serbo-Croatian and Bulgarian </span><span>Dunav, </span><span>Romanian </span>Dunărea,<span>Ukrainian </span><span>Dunay </span><span>, river, the second longest in </span>Europe<span> after the </span>Volga<span>. It rises in the </span>Black Forest<span> mountains of western </span>Germany<span> and flows for some 1,770 miles (2,850 km) to its mouth on the </span>Black Sea<span>. Along its course it passes through 10 countries: Germany, </span>Austria<span>, </span>Slovakia<span>, </span>Hungary<span>, </span>Croatia<span>, </span>Serbia<span>, </span>Bulgaria<span>, </span>Romania<span>, </span>Moldova<span>, and </span><span>Ukraine</span>
The Berlin wall is a Relic Origin Boundary.
Answer: Relic Origin Boundary
Answer:
mountains / mountain ranges.
