According to document c, who intercepted the original document (document a), decoded it, and is now sharing it with the united states? why are they sharing the coded message in document a with the united states?

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the colonists were also expected to pay a tax to meet the costs of establishing and manning the borders of the proclamation line which led to the belief that the king had sided with the indians despite pontiac's rebellion, against the interests of the settlers. this contributed to the causes of the american revolution.