Define Bitcoin
Bitcoin (BTC) is a cryptocurrency (a virtual currency) designed to act as money and a form of payment outside the control of any one person, group, or entity.
This removes the need for trusted third-party involvement (e.g., a mint or bank) in financial transactions.
This means Bitcoin isn't controlled by any country or group of countries. It is rewarded to blockchain miners who verify transactions and Bitcoin can be purchased on several exchanges.
Bitcoin was introduced to the public in 2009 by an anonymous developer or group of developers using the name Satoshi Nakamoto. It has since become the most well-known and largest cryptocurrency in the world. Its popularity has inspired the development of many other cryptocurrencies.