The First Social Network: In rural Argentina residents send messages w AM radio

In rural Argentina, residents used AM radio to send messages to each other, creating the first social network. This pre-digital social network was used by villagers to communicate with each other, share information, and coordinate daily activities. The system, called the 'Servicio de Mensajes y Noticias', was established in the 1940s and operated until the 1990s. It used a network of volunteer operators who took turns broadcasting messages on a designated frequency.