A. appointment of Supreme Court justices
The passage of the Pendleton Act historically significant because it made the quality of someone's work the basis for hiring. <span>The </span>Pendleton<span> Civil Service Reform </span>Act<span> (ch. 27, 22 Stat. 403) is a United States federal law, enacted in 1883, which established that positions within the federal government should be awarded on the basis of merit instead of political affiliation.</span>
Answer:
Inventions like the airplane and machine gun
Explanation:
World War I was so deadly because all of the new weapons that were invented. New technology that was being invented such as machine guns and mustard gas made war deadlier than every war before.
