Germany was where Hitler controlled his nazi army so he already took over Germany, but it remains free, beacause it was like head quaters to Hitler.
he didn't want to get killed by natzi Germany
Winston Churchill was not the president, he was the Prime Minister, he declared war on Germany
the same reason that the current government controls the news, they do not want bad things to be said about their initiatives
The Nazis did what they did to the Jews
When an ex girlfriend does not want to remain friend you can do this. You can tell her the reason about why you want to be friends with her. You can also separate if you are not at all interested yourself.
because he felt like it because he felt like it
This question makes no sense. No one would want to hide anything in Germany except the Nazis. They hid billions of dollars and valuables in some mines, caves and other places. Anyone else wanting to hide something in Germany risked having the Nazis or the Allied Forces finding it or having the hiding spot bombed.
The Nazis left neutral nations alone. There is no indication that the situation would have remained so.
The world did not go against the German Nazis because the other countries did not want to get involved in the dispute and have another bloody world war.
The Poles were invaded by the Nazis. They did not want to fight with the Nazis or cooperate with them. Poles were killed by the thousands. Germans moved right into their homes and businesses. So any Poles who made it to freedom or were already in England they fought as free Poles with the Allies to defeat the Nazis. There was a fairly strong Underground Resistance movement in Poland to fight against the Nazis.
The Nazis felt their race was superior to everyone elses
the Nazis plan was to gain power to take over the world and rule Germany, altough he failed to regain the power that Germany want, the plan was a bad idea and went down hill. Hitler shot himslef, that was no help for the Germans to gain the power. World War 2 was really important to Hitler and he never had the chance to look out for his country.