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Packet Switching Network (1962)

Paul Baran of RAND suggests a packet switching network to transfer data. The origin is military for utmost security in transferring information of networks . Data is split into tiny packets that may take different routes to a destination. This makes it hard to eavesdrop on messages. There is more than one route available -- if one route goes down another may be followed. Therefore, Networks can withstand large scale destruction (Nuclear attack - This was the time of the Cold War).