On September 1, 1939, Germany, led by Hitler, attacked its neighboring country, Poland. It was the beginning of a war that would become the most comprehensive war in the history, so far, of World War II. Over the next six years, concentration camps were built, homes and towns were destroyed, and millions of people were killed, most of them Jews. Before the war finally ended in 1945, Germany occupied the last country. On March 19, 1944, they occupied Hungary and in May 1944 they deported all Jews to Aushwitz-Birkenau. So that the Germans could deport Hungarian Jews to Aushwitz-Birkenau, they had to prepare the camps. The machines used to exterminate the Jews were renewed and developed. This was done after orders from SS administrators. The goal was for everything to go faster and be more efficient. Cruel and strong people, also known as "experts", were recruited and hired to supervise and ensure that everything went well during the extermination. The entire SS staff was also reinforced and a railway spur was built leading directly to the camp. Because...