Answer:
The president who guided the US through the Great Depression and World War 2.
Step-by-step explanation:
Roosevelt had all the leadership skills to guide the US through the two biggest crises of the 20th century. He was curious and always willing to learn - from mistakes made by others such as Wilson in the first World War. He was famous for his New Deal that helped the US to recover from the Great Depression, for his fireside radio talks that showed him as an excellent communicator, and, of course, for his determined handling of the second world war.