The atomic bomb, more specifically: the discovery of atomic fission.
Answer:
THIS IS YOUR ANSWER:
<em>Cathode rays (electron beam or e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode (the electrode connected to the negative terminal of the voltage supply). </em>
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Answer:
I think is B. since I cant see how using fertilizers would have prevented the dust bowl.
Explanation:
<span>It showed that the Union's 3-way plan might succeed.</span>
