The principal objective of the "final solution" was to eliminate all European Jews. Its planning by the Nazi regime was completed at a secret meeting at an estate outside Berlin during the Wannsee conference in 1942.
Directly involved in the final solution were the lieutenant general of the SS Reinhard Heydrich, Hermann Göring, Hitler's right-hand man, Adolf Eichmann and the doctor Josef Bühler, among others. The conference dealt with the subject of Poland, the country with the biggest Jewish population in Europe and which had transport networks capable of moving large quantities of people. Poland would later witness many Jewish deaths at the hands of the Nazis.
As a result of this meeting, in certain concentration camps , which would become extermination camps, gas chambers were built. To implement this plan, the Nazis considered the most efficient and systematic way to exterminate the Jews. It was decided that the Jews would be killed in extermination camps, in gas chambers using a special gas called zyklon b. Those who entered would be told they were hot water showers so that they would not put up any resistance. Their bodies would then be cremated. If they did not die in this way, the prisoners who went through concentration camps would die due to hygiene, starvation, disease or the cold of winter. Hitler himself had been talking about this famous "Jewish question" since 1919 and the extermination of the European Jews had become a pillar of Nazism.
Auschwitz-Birkenau (which was the biggest camp), Majdanek, y Chelmno (first extermination camp), Belzec, Sobibor and Treblinka were among the extermination camps. Before the war ended, the Nazis destroyed the Treblinka camp in order not to leave any evidence of the place that had witnessed so many deaths and that had been part of the final solution.
When the war ended, zyklon b was found inside the various extermination camps. The quantity found was enough to kill over four million people. In other words, the final solution was conceived to completely erase the Jewish religion from Europe.