polish
Poland
Poland
Poland, Austria and Chechozlovakia.
Well by the first part of Question of "Which country was annexed by the Germans", The answer is Austria but it was in 1938. Germany invaded Poland which triggered World War 2.
Great Britain and France declared war on Germany, when Germany invaded Poland - so began the second World War in Europe.
Poland
The question as posed does not really make sense. It was the Russian defense of Serbia against Austria-Hungary's invasion that started World War 1. The German declaration of war against Russia then triggered the alliance of the Triple Entente, expanding the reach of the conflict. Once the Triple Entente was involved, the Germans wanted to invade France. But in order to do so and outflank the French forces on the German/French border, they had to invade the north of France, going first through Belgium. So Belgium was the first country to be invaded.
Poland
poland
Poland was the first Allied country invaded & defeated by Germany in WW2.
Kuwait
The Rhineland