In 1933, Hitler took action against Jewish people in Germany by

setting up concentration camps, boycotting Jewish businesses, burning books written by Jewish authors.

Using the law to force "undesirables" like Jews from German society. The gradual acceleration of his plans for Germany may have masked the reality of what he was doing for many people, including members of the German army. In 1939, Germany invaded Poland, triggering World War II, the Nazi regime and also embarked on a "final solution" for Jews, embarking on one of the most horrific examples of mass genocide in human history.

The basis for the Holocaust was laid in 1933, when the Germans elected Adolf Hitler as their chancellor.