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...is built, the next step is to light the tinder, using either an [[ignition device]] such as a [[match]] or a lighter. A reasonably skillful fire-builder usin ...ossible to restart the new day's fire by using the embers vice an igniting device.

...d a [[sextant]] to provide a very accurate [[navigation]] capability. This device greatly improved maritime trade by making travel safer and more efficient. More technically, a ''compass'' is a magnetic device using a needle to indicate the direction of the magnetic north of a planet'