Well, it decreased the demand of Slave Labor.
Back then, the technology advancement , especially in agricultural sector, significantly increased the total production. This cause the demand of overall labor decreased. The northern US, who utilized more of this advancement more than their southern neighbor, manage to produce hundred times more output than the southern who still depended on their slave labor
Germany and italy allied, britain, france and american allied. Assaination of the arch duch ferdinand. Sinking of american passenger ship lithunia.....unless i got this confused with ww2
Answer: Because the surface gold al disappeared from all the people excavating it.
Explanation: