Answer:
I believe its C - revolution against the russian govt.
Well countries typically allied with their neighbors because they usually had close relations like for instance Britain France and Belgium where all huddled together in west Europe while Germany was close to with Austria Hungary and both had good relations with the ottoman empire. because all of these countries were close together sometimes things got heated and with all of these alliances it was easy for all of these countries to fight each other.
The Compromise of 1850 and the Kansas-Nebraska Act also worked to obtain similar results. When the newly founded Republican Party (the first real anti-slavery party) won its first election in 1860 with Abraham Lincoln, the South feared that the government would infringe on its rights and interests, which led to secession, and then the Civil War.
