What events provoked southern states to secede from the union

The event that caused the Southern states to secede was the election of Abraham Lincoln  

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation:

straight down to hell mate