Ww2 happened because Germany refused to pay they’re international debts, largely to America, sanctions were filed against Germany isolating them and that in turn caused Germany’s hyper inflation. Germany was already internally divided before the war and this helped Germany to favour a strong aggressive leader.

Hitler/Germany wanted to rule Europe and does to this present day, apart from enormous lose of life, ww2 achieved very little. Due to millions being lost to the war, there was a severe deficit in the workforce across Europe and its this that started mass immigration and this is also why it’s largely immigrants that support the reich and this also explains why to this day that the vast majority of movement within the reich is from outside the reich such as Africa and the Middle East.

Ironically ww3 will likely reverse mass immigration as its this group that make up most of the eu young people, most are fighting age so to speak, the lose will rebalance the world population, that will ultimately be the main objective of ww3.