Long-distance communication
- The Greeks used messenger pigeons to deliver the results of the first Olympiad in the year 776 B.C. They also established a library in 530 B.C.
- Near the end of the B.C. period, systems of long-distance communication became more commonplace. In Egypt and China, messenger relay stations were built. They used human messengers on foot or horseback.
- In the year 14, the Romans established the first postal service. Mail delivery systems were already established in India and China.
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