What are the 3 most important reasons for stuying history?

People study history for very varied reasons but among them the most important reasons for me are to reveal past contributions of civilization so that we can connect the past to the present. It is also important to take notes of different scenarios so that we can create the greater pictures. So, I picked the first three choices. 1) to connect the dots to form a picture

2) to reveal past contributions of civilizations

3) to connect the past to the present

- "schenck v. united states, case in which the u.s. supreme court ruled on march 3, 1919, that the freedom of speech protection afforded in the u.s. constitution's first amendment could be restricted if the words spoken or printed represented to society a “clear and present danger.” "

- speech aimed to potentially create danger could be banned.

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