Three leaders who shaped the world

There are three videos: dealing with the three leaders who shaped the world from the late 1920's to 1945. Joseph Stalin (1879-1953) emerged as the
Soviet Union's leader following the 1924 death of Lenin (1870-1924). Adolph Hitler (1889-1945) took full advantage of German degradation following
World War I. Franklin Delano Roosevelt (1882-1945) overcame the obstacles polio posed and became the longest-serving American President.
Compare and contrast these three leaders. How did these individuals affect the world? Why were these men able to rise to power, and maintain their
leadership? Finally, interpret why each of these leaders increased the power of government?
properly cited in the current APA format, scholarly references must within 5 years.
Video link:
https://youtu.be/jil4OCsxT_U
https://youtu.be/LxEYzFRZ87A
https://youtu.be/uCu7IT81gh8