Attachment Below- I should know this, but it's been a while. Help pls! TwT

Part a: which statement identifies the central idea of the text? a: the north was more powerful than the south and was always going to be the victor of the civil war. b: despite the obvious strength of the north, the outcome of the war was unpredictable at the time. c: the united states underestimated the strength of the south, giving it the upper hand. answer !

What is the value of x? enter your answer in the box. x =

Jefferson davis was the president of the united states of america during the civil war. true or false?