Why was hitler important?

he taughted us what happens when we give up our right to fight

Adolf Hitler was important because he was the leader of Germany's Nazi Party. Hitler was one of the most powerful and notorious dictators of the 20th century. He capitalized on economic woes, popular discontent and political infighting to take absolute power in Germany beginning in 1933. Germany's invasion of Poland in 1939 led to the outbreak of World War II, and by 1941 Nazi forces had occupied much of Europe. Hitlers obsessive pursuit of Aryan supremacy fueled the murder of some 6 million Jews, along with other victims.

Basically Hitler being the leader of the Germany Nazi Party automatically made him important. But the fact Hitler caused so much damage with his obsession of Aryan supremacy (the death of 6 million Jews) was what made him so well known.