Communication has evolved greatly over time, from early forms like smoke signals and carrier pigeons to modern digital technologies. Early electrical telegraphs in the late 19th century allowed near-instant long-distance communication by wire, pioneering real-time messaging. The development of the telephone and radio in the early 20th century enabled voice and audio communication without wires over long distances. More recently, the internet, mobile phones, and social media have revolutionized communication, connecting billions of users worldwide and transforming how people interact and share information on a global scale.