Why did increasing militarism lead the european powers to form alliances? to ensure their governments could obtain more resources to provide protection from their enemies to form a larger unified government to improve trade with their allies

The correct answer is B) to provide protection from its enemies.  

Increasing militarism led European powers to form alliances to provide protection from its enemies.  

European nations were not sure to really had the capacity to defend themselves alone with the increasing of militarism and the weaponry of the time. They knew that alone, it could be more difficult to defend in case of a military aggression.

That is why they formed alliances such as the Triple Entente in 1912: France, Great Britain, and Russia. Or the Triple Alliance: Germany, Italy, and Austria-Hungary, in 1882.

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.

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else