Because it got America over thousands of miles of land for a very cheap amount of currency.
Agriculture has been the strongest sector of bulgarias econonmy since the early 1990's is false.
Abraham Lincoln winning the President contributed most to the Civil War. After he won the election, southerners were scared that Lincoln would try to get rid of slavery and change their traditions. Once Abe Lincoln was elected, states started to secede (like South Carolina) from the Union just a couple months later. This secession ultimately lead to the confrontation at Fort Sumter, leading to the start of the Civil War.
