Drone's were invented in the 1970s by Abraham Kareem for military use by the Israeli Air Force. Drones are now used for both military and civilian purposes such as delivery, aerial photography, and surveillance. They can be operated remotely through a control system and some drones have autonomous capabilities. Drones come in various sizes to carry different payloads and can provide benefits like reducing human exposure to risk. However, there are also disadvantages like regulatory restrictions and potential privacy and security issues.