World History searches the people, events, and ideas that have formed history from the origins of human society to the present day. History is very significant because it helps us understand why we live the way we are living and why we are where we are as a class and country. It is critical to study history because history is the solution to how this world came to be. History guides us lessons received from past errors.
Leonardo's ability to observe and study, then demonstrate those things in his art, he was pretty much the definition of a Renaissance man. Defined: Renaissance man: a person with many talents or areas of knowledge.