what caused WWII

There was a lot of contributing factors to why the second would war was started but the contribution was the rise of Hitler. Hitler came to power on January 30th 1933. He was one of the evilest people ever to walk the earth. He attacked all over Europe. He could not be resound with. He also murdered countless Jews. He thought they were an inspirer race. So he tried to wipe the whole people of the face of the earth. He sent them to concentration camps to die and have horrible experiments don on them. It is estimated that he murdered six million Jews. Witch was about two-thirds the European Jewish population. He was allied with the Japanese in the Second World War. America was allied with basically the rest of the world. It was a very bloody war. And if it was not for Hitler this could of bin avoided.