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D. Steam Locomotive
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The Wagner Act helped to aid organized labor because it guaranteed the labor unions to the right to bargain collectfully on equal terms with employers. The Wagner Act is also known as the The National Labor Relations Act of 1935. Workers that were under the union were protecded from being fired or being punished by being in an union.
The fact that roommates who became real friends had common backgrounds, identical majors, and close political viewpoints illustrates the effect of which factor on liking similarity.
Affinity is similarity or similarity. When comparing two things, such as physical objects, ideas, or experiences, we often look at their similarities and differences. The difference is the opposite of the similarity. Neither square nor rectangle he has four sides and this is the similarity between them.
Similarity is defined as qualities or states that have something in common. If you and your cousin look exactly alike, this is an example of a striking similarity between the two of you.
Learn more about similarity here: brainly.com/question/2099071
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