As a result of the adam-onís treaty,

The de facto control of West Florida, which had been in American hands since Andrew Jackson had established the American presence in 1818, was recognized, and

a firm delineation of the border between the Louisiana Purchase and the remaining Spanish claims in North America was settled, beginning with the Sabine River between Texas and Louisiana.

The United States assumed the claims of its citizens against Spain, up to $5 million, and Pinckney's Treaty of 1795 was continued to the extent that it did not conflict.

The Spanish were not pleased with the treaty and delayed ratification while hoping to gain support from fellow European powers. None was forthcoming and after King Ferdinand was reduced to a constitutional monarch in 1820, Spain approved the treaty.

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.

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