An object is called as a good conductor of electricity when it allows the electrons to flow within it easily (for example a copper rod). Resistance it the opposition to the f â¦ low of electrons through it.
The Ambush of the steamboat J. R. Williams, which was carrying supplies from Fort Smith to Fort Gibson along the Arkansas River on July 16, 1863 demonstrated this. The steamboat was destroyed, the cargo was lost, and the tiny Union escort was run off. The loss did not affect the Union war effort, however.
Portage was borrowed from French back in the 15th century to mean carrying, transporting or freight, and it has kept its simple carrying sense to the present day. But its first known use in its carrying of boats sense came in 1698, and the obstacle that the canoes couldn't be steered over was none other than Niagara Falls.