I truly want to say A is the answer , B isn't anything I believe because of the gold rush.
US contribution in Nicaragua uncover about the Reagan organization is that it was ready to work outside the law to accomplish its objectives. The Reagan organization's strategy towards Nicaragua delivered a noteworthy conflict between the official and authoritative arms as Congress tried to confine if not check through and through the capacity of the White House to bolster the Contras.
Answer:
I think the answer is independent
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Brown v. Board of Education was a landmark case in which it was finally proven that segregation in institutions of education was highly unconstitutional, so you could say that that is the greatest effect since it made other schools become open for everyone as well.
Without the use of machinery many Americans will be employed to do various jobs. Their unemployment rate during that time will decrease. Another consideration is that there is a need for expertise in handling heavy machinery. One must be learned enough not only to drive heavy machinery but also to operate it and maintain its good condition.
