Donald Trump makes history on Friday by becoming the 45th president of the United States. What follows is a weekend of inauguration pageantry, a parade, several inaugural balls -- even fireworks. The presidential inauguration has a rich history dating back to George Washington. For more on that legacy, we turned to historian Kenneth C. Davis , the author of the " Don't Know Much About " series of books. https://www.youtube.com/watch?v=tYnYdT1CqTc&t=354s