1) Orchids are one of the largest families of flowering plants, with over 25,000 species.

2) The concept of reinsurance, which is insurance for insurance companies, originated in the 17th century.

3) The word "bank" comes from the Italian word "banco," which means bench. In medieval Italy, bankers conducted their business on benches in the marketplace.

4) The Bank of England, established in 1694, is the central bank of the United Kingdom and one of the oldest central banks in the world.