Answer:
B. Adolf Hitler
in details
Adolf Hitler, the leader of the Nazi Party in Germany, began to take control of Europe in the 1930s. He came to power as Chancellor of Germany in 1933 and quickly consolidated power, creating a totalitarian regime. Hitler began aggressive expansionist policies, including the annexation of Austria in 1938 and the invasion of Czechoslovakia in 1939. This led to the outbreak of World War II in Europe in 1939. Hitler's actions and policies ultimately resulted in the deaths of millions of people, including six million Jews who were murdered in the Holocaust.