Why was south so reluctant to give up their slaves that they were willing to start a war ?

Slave labor was unpaid and made up the majority of the workforce.

b. his ability to use formal language to stress strong feelings

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,