Why did southerners feel the federal government was not protecting their interests?
a. the federal government did not enforce the fugitive slave law of 1793.
b. the federal government refused to allow cotton to be grown in california,
c. the federal government wanted texas to be admitted to the union as a free state.
d. the federal government wanted to amend the fugitive slave law of 1793.

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 % " .

the answer is b. hope this