Conquered people often times became prisoners or servants to the elite of the land they now belonged to.
Prior to the outbreak of the Civil War, the election of 1860 increased sectional tensions of the United States by lifting pro-union, anti-slavery statesman, Abraham Lincoln into the Presidency. In reaction, the Southern States protested in many ways, but in no more dramatic way than, one by one, seceding.
It doesn't apply to executive orders
Militarism affected the nations of World War 1 because of the fact that the Nations relied upon the Military for protection from the war. Countries massed produced weapons and arms while the countries leaders ended up being Military leaders. The country that was the most Military inclined was that of Germany.