Government declare holiday to celebrate some national days .is it good to grant holiday on those days?

there were abundant sources of fuel nearby

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."

where is the passage

i cant solve it without knowing the passage

the constitution gives congress the power to regulate commerce "among" the several states.