(needing help asap.) We are still in awe of the building techniques workers used to construct the pyramids, especially how they: Group of answer choices

cemented the stone blocks together.

filled in the cracks forty stories high.

lifted the huge stone blocks forty stories high.

poured water down the three sides.

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

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 would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.