{$mEDiAurl} whAt is thE tAlk mAinly ABout
A、thE golD mining opErAtions Among thE nAtivEAmEriCAns.
B、thE golD-mining FrEnziEs in gEorgiA AnDCAliForniA、
C、thE wEstwArD movEmEnt ACross thE unitED stAtEs.
D、thE mistrEAtmEnt oF thE nAtivEAmEriCAns in gEorgiA、