Over time, the United States government has backed the paper currency it printed in all of the following ways except



A.
gold


B.
government's promise to pay


C.
silver


D.
copper

Respuesta :

D. copper is the answer.
lr1265
Over time, the United States government has backed the paper currency it printed in all of the following ways except copper. Gold, silver, and the promise of the government to pay are all still backed.