Answer:
D, because a similar situation happened in the 60's when the Soviet Union tried to install nuclear armaments in Cuba when the U.S installed it's own arsenal in Turkey.
Explanation:
it is well known as the Cuban missile crisis.
South Carolina
South Carolina seceded from the Union after the announcement of Lincoln winning the 1860 election.
South Carolina believed Lincoln as president was dire and seceded from the Union first. South Carolina took Fort Sumter being within their border. Lincoln viewed this as a hostile action and would be considered the first battle of the Civil War.
France helped Serbia and Russia in WWI
The answer is unsure to me because i don't see the examples above, but I'd go with d.
