The Dawes General Allotment Act of 1887 was one of the most important pieces of Native American legislation since the colonization of North America. An allotment is . A.
a random drawing for a political position
B.
a large or impressive amount of something
C.
a political term used to describe the collection of taxes
D.
a portion of a larger whole set aside for an individual or small group

the correct answer is:   "   3.6 % " .

          →   the unemployment rate is:   " 3.6 % " .

explanation:

to calculate the "unemployment rate" :

the "unemployment rate"   =

  [# of people unemployed] /   [working age population]   * 100 %   ;

                =   [9 million] / [250 million]     *   100 % ;

    →     note:   the units of "million" cancel out;

                    since:   " {million} / {million} = 1 " ;

                =   (9 / 250)   * 100 %   ;

                = 0.036 * 100 % ;

                =   3.6 %

answer:   the unemployment rate is:   " 3.6 % " .