Rhineland was the name of the region <span>long the german/Belgian border that was demilitarised following world war I and was a focal point of Adolf Hitler's expansionistic goals in the years leading up to world war II. Rhineland was demilitarised because it was included among the actions agreed to be done in Germany at the Treaty of Versailles.</span>
The Romantic Movement was a response to 1. Napoleon's invasion of Central Europe and 2. after the Industrial Revolution.
Nuclear war duh. That's why it was called the Cold War in the first place there was no fighting to begin with. It was just a series of threats and who could have the best things like the Space Race.