Which of the following is not true about a treaty?
a. a treaty may be negotiated with other countries, but in the united states, it would also requite a 2/3 vote in the senate to pass.
b. treaties are not used any more because countries can never agree on which issues are important enough.
c. a treaty has the force of law once countries have agreed on them.

which time period is this? or is this story fictional, i'm going to need more info to answer this question

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 % " .