How did the invention of the cotton gin contribute to the industrial Revolution?

A significant invention of the Industrial Revolution was the cotton gin, which was invented by Eli Whitney in 1793. ... First, the machine helped to boost productivity and increased cotton usage. Second, the cotton gin helped to increase production of cotton in the United States, and made cotton into a profitable crop.

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.