The invention of the caused slavery to increase in Texas because it was able to produce more.

The Cotton Gin

Explanation:

With the cotton gin, cotton could be refined with ease, yet plantation owners still needed laborers to pick the cotton, causing the need for slavery. Numbers of slaves skyrocketed in America after the cotton gin’s invention, going from a little under 700,000 in 1790 to almost 1,200,000 in 1810 in just 20 years

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 % " .

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