Best-selling author Michael Crichton believes, “If you don't know history, then you don't know anything. You are a leaf that doesn't know it is part of a tree.” If we were to hold his words true, it is absolutely crucial that we have as many historical events on our fingertips as possible. Why? For starters, we learn from others' mistakes and achievements. Also, the more knowledge we gain from past experiences—even if they belong to others—the more equipped we are to handle similar situations in future. Also, every now and then it is important that we remember those heroes, without who we would not be able to enjoy such a comfortable life. Revolutions, catastrophes, inventions, literature and politics, all encompassed in history, are just a few aspects that teach us the most significant lessons in life. March 15 is one such day, when several consequential incidents took place. Be it the assassination of Roman ruler Julius Caesar or the brutal norms set by the Nazi dictator, each event is noteworthy in its own right. The following life-altering occurrences are so momentous that you would be missing out on a lot if you didn’t know about some of them.