Answer:
Rationing was not only one of those ways, but it was a way Americans contributed to the war effort. ... Supplies such as gasoline, butter, sugar and canned milk were rationed because they needed to be diverted to the war effort. War also disrupted trade, limiting the availability of some
"<span>Slave labor helped the economy grow because it was taxed," would be the best option from the list, but it had less to do with taxation and more to do with free labor. </span>
An increase in the cost of factors of production
See ya broski!