Why were southerners opposed to the abolition of slavery?

Which document does the second paragraph of the declaration of independence echo

What were the economic, religious and social/political factors in the abolition of slaves

    which of the following was anecological  result of european exploration from 1400 to 1800?   a.  increased trade with east asia      b.  the spread of epidemic diseases      c.  expansion of english territory      d.  the spread of christianity