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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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Year 8 Geography Communications Timeline
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Atualizado:
9 nov 2018
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ZT
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Communications Timeline
By
ZT
9 nov 2018
1
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433
Eventos
Smoke signals were first used in Ancient China to alert others of danger along the Great Wall.
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