Where did the Germans invade to start world war 1?
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.
Yes, Dutch did invade England in 1688. In the second world war the netherlands had nothing to do with the war. They where neutral. Germany decided due to heavy resistance on the belgium and french border to invade the netherlands first. Also the Netherlands had no part in trying to invade England in the second world war. You got the germans and dutch mixed up.
The Germans did not invade England in modern times such as during the first or second World Wars. Some German tribes did invade England around the 5th century AD, ending the Roman-British culture established there by the Roman Empire. The main reason the Germans didn't invade in the 2nd world war was the British fought and won against the Luftwaffe in the Battle of Britain, meaning the British had air superiority. It would be suicidal…
When Adolf Hitler of the Nazi Germans ordered his military forces to invade and bomb Poland in September 1939 that started World War 2. At that time no one knew this would result in a world war so no one said, "Start World War 2". I think Hitler probably knew very well what he was doing, and knew that the invasion of Poland would cause world war. It was clear enough.