One result of the broadcasting of the Army-McCarthy hearings on television
was that he lost the support of the American public.
The hearing was between the Army and Senator McCarthy in which he was
accused of trying to influence the Army to give preferential treatment to G.
David Schine who was his former aide and close friend.
Senator McCarthy accused the Army of communist and security risks within
them which was why he was being framed for the offense, The hearing was
televised and it led to the decline and decreased popularity of the Senator as lost the support of the American public.
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This type of advertising is called Testimonial and it's using the technique known as Celebrity Endorsement. In testimonial advertising the message is saying "this person says this product/politician is good", and the celebrity endorsement refers to the link between the product and the famous person. This technique is mainly used in sports, when famous athletes only wear one type of brand, they are telling you "this product is good because this famous person always uses it".
Answer:
the availability of iron and coal, discovery of the New World, and an energetic scientific community.
Explanation: