Need help with conclusion paragraph?

Question

I'm writing about the causes of world war 2 and i have no idea how to end my paper.

this is my thesis: there were many factor that lead to world war 2, but 2 factor stand out the most hitlers plans for germany and democratic power were passive.

let me know if this is a good conclusion:

As a result of these 2 main factor it lead to one of the world most bloodiest wars, while people died, some people became heros

Answer 1

Your conclusion should contain the following:
1. Restated thesis
2. Key elements from your paper
3. Leave the reader with something to think about

(PS Please don't start your paragraph with "In conclusion..." It's cliche and your teachers are tired of reading it--trust me!)