Primary and secondary sources are essential to studying history. Historical evidences help us learn to a certain extent to what has happened in the past. We will never know what exactly has happened, but we can take all evidences and arguments into consideration to evaluate the most accurate assumption of history. This is important’to study because history repeats itself and we can learn from past mistakes to help solve future problems. I once seen a quote in a library stating “A person who does not know history does not have a future.”