The answer may be "tobacco".
The main cause of the second industrial revolution was, natural resources, abundant labor supply, strong government policy and new sources of power.
Explanation:
Tens of thousands of people died because of prohibition-related violence and drinking unregulated booze. The big experiment came to an end in 1933 when the Twenty-first Amendment was ratified by 36 of the 48 states. The Twenty-first Amendment was deemed so necessary (and the Eighteenth so ineffective), it is the only Constitutional amendment ever passed to overturn a previous amendment. Hence, Prohibition was a terrible mistake.
It would be C. It gave them the rights to vote for representation in the government.