1) The first bank in the world, Banca Monte dei Paschi di Siena, was established in Italy in 1472 and is still in operation today.

2) The process of impeachment involves charging a public official, such as a president or high-ranking government official, with misconduct and potentially removing them from office through a trial and vote by the legislature.

3) The tongue of a blue whale is so big that about 50 people could stand on it.

4) The concept of compound interest can be attributed to the ancient Babylonians, who used it in their banking practices.