16 points for the correct answer and the brainliest for the correct answer!

the final event that caused southern states to begin to secede from or leave the united states was

a. abraham lincoln being elected president

b. the union army attacking fort sumter, sc

c. president lincoln declaring war on the south

d. slavery being abolish

D. Slavery being abolished

Explanation:

Abraham Lincoln being elected was the first thing to happen then it was President Abraham Lincoln declaring war on the South, then the Union attack Fort Sumpter and finally slavery was abolished and the Emancipation Proclamation helped Lincoln end the Civil War faster.

I hope that this helps you.

answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions

i will get back to you let me look in my notes and i will tell you shortly