What is the celebration of the end of slavery called

Juneteenth

Explanation:

If you're asking for the holiday celebrating the end of slavery, it's Juneteenth (June 19th).

emancipated day

Explanation:

juneteenth 「june 19」as known emancipation day is an holiday celebrated for those whom been enslaved in the united states and the ending of slavery.

what are local authorities doing to fix the problem

explanation:

what are local authorities doing to fix the problem

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 % " .