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Over long distances people could communicate with fires. If there was a threat of invasion the defenders would make fires on the top of hills or mountains. When the invading force was seen the first fire on the hill would be lit. The people on the next hill would see it and light their fire which would be seen on the next hill and so on until the leader of the army would find out. This meant a simple message could be passed a long way in a short period of time.

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12y ago

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