United States has a rich Literary history, Its presidents have been known to deliver famous and inspiring speechs through out its history.

So, it will be interesting to compare the size of vocabulary used by different presidents thorughout history. Here the vocabulary used by all presidents of US in their respective public speeches. The data is taken from miller center, which hosts 894 speeches from different presidents of united states. Also, the data lacks all speeches by a president, as only some key speeches are taken into account. It is also important to note the number of speeches taken into account for the analysis for each president.