Because it was a threath to his "Superior Race" and because it was in his way.
Well as you probably know already, nobody really tried to stop Hitler from invading countries around Germany under the policy of appeasement. The Brits and French wanted to keep Germany sweet after the turmoil they caused in the Great War and didn't want to kick up a fuss. Hitler was pretty much welcomed into Austria by the Germanic majority (probably not the correct way of phrasing this..) and the Sudetenland of Czechoslovakia.
It wasn't until he invaded Poland that the British/French had enough of appeasing him and went to war on Germany but they still did little or nothing to stop German expansion (see "the phoney war") Hitler's use of blitzkrieg meant his troops could quickly move into and neutralize the next country in line to be taken and had to keep moving quickly to keep the Allies guessing. They had no need to rest and "re-arm" as such because they had a huge supply of troops and the resources/infrastructure to keep fueling the war effort. The reason they didn't fare so well by the time they got into Russia they were nearly too far away from these new troops/resources/infrastructure and hence suffered.
Well as you probably know already, nobody really tried to stop Hitler from invading countries around Germany under the policy of appeasement. The Brits and French wanted to keep Germany sweet after the turmoil they caused in the Great War and didn't want to kick up a fuss. Hitler was pretty much welcomed into Austria by the Germanic majority (probably not the correct way of phrasing this..) and the Sudetenland of Czechoslovakia.
It wasn't until he invaded Poland that the British/French had enough of appeasing him and went to war on Germany but they still did little or nothing to stop German expansion (see "the phoney war") Hitler's use of blitzkrieg meant his troops could quickly move into and neutralize the next country in line to be taken and had to keep moving quickly to keep the Allies guessing. They had no need to rest and "re-arm" as such because they had a huge supply of troops and the resources/infrastructure to keep fueling the war effort. The reason they didn't fare so well by the time they got into Russia they were nearly too far away from these new troops/resources/infrastructure and hence suffered.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.