What issue was behind the question of the expansion of slavery after the mexican war

Plz ive been stuck on this question forever. in 1753 george washington was sent on a mission to a. build a fort at the point where the allegheny and monongahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio river.

Which of the following does not describe europe after that fall of the western roman empireh

What isaura are reportes presently working to expose and reform?