What is one factor that has affected economic
development in southern african nations in the
21st century?
(1) reliance on coffee exports
(2) equal distribution of wealth
(3) establishment of communist governments
(4) spread of the aids epidemic

porter is writing economic history because he is focusing on the cost of developing vaccines.

d

step-by-step explanation:

an inequality is an expression which means more than one number is a solution. we graph the solutions on a number line to show all possible values. we graph using circles and arrows.

this is a filled in circle on -2 so this is . this means only answers c and d are options.

answer d points to the right.