Why did McKinley really choose to go to war? O A. Congress convinced McKinley that if he continued to resist the war, Republicans would lose control of Congress in the elections of 1898.

B. The Maine exploded in Havana Harbor.

C. The Enrique Dupuy de Lôme letter scandal which embarrassed the US.

D. William Randolph Hearst stories mobilized Americans in favor of US involvement in the war.

E. Mark Hanna told Mckinley to do it.

B. the Maine exploded in Havana harbor

Explanation:

2 reasons why McKinley chose to go to war. first being America's support towards Cuba's and Philipinos struggle against Spanish rule. second being the mysterious explosion of the U.S.S Maine.

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.

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 % " .