How did the European balance of power change from 1815 to 1871

With the creation of Germany in 1871, the old balance of power involving France, a rump Brandenburg-Prussia, Austria-Hungary, and Russia was replaced by a new system. ... By keeping Constantinople intact, the balance of power in Europe proper could be maintained.

Explanation:

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.

answer; /// i do believe that its napolean's conquest of spain;