general_fact: 84 is the code for international direct dial phone calls to Vietnam.
math_fact: 84 is the sum of the first seven triangular numbers (making it a tetrahedral number), as well as the sum of a twin prime (41 + 43).
trivia: 84 is the code for international direct dial phone calls to Vietnam.
historical_date: March 24th is the day in 1933 that the Enabling Act of 1933 is passed by the German Reichstag, allowing Adolf Hitler to gain plenary power.