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

2) The first video game console, the Magnavox Odyssey, was released in 1972 and featured games such as Pong and Table Tennis.

3) The first commercially available digital camera, the Dycam Model 1, was introduced in 1990 and had a resolution of 376 x 240 pixels.

4) The European Union (EU) is a supranational organization comprising 27 member states that cooperate on various issues, including trade, economic integration, and common policies, while preserving individual national sovereignty.