<span>Below are three communication method used attacking battalions used to keep in contact with their headquarters located behind them:
</span><span>Pigeon, radio, runner
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The difference would be that the mayor is governing on a smaller scale.. because the president has a bigger influence because of the number of people he governs in comparison to a small town mayor
jupiter and saturn likely helped stabilize the solar system, protecting Earth and the other interior, rocky planets from frequent run-ins with big, fast-moving objects,