Discuss political career and impact of Senator Joseph McCarthy, with mention of the circumstances behind his rise to power in the 1950s and the factors that led to his downfall.

Discuss political career and impact of Senator Joseph McCarthy, with mention of the circumstances behind his rise to power in the 1950s and the factors that led to his downfall.Also make mention of the following:
[a] The Wheeling Speech of February 1950
[b] Edward R. Murrow and his See It Now Telecast focused on McCarthy in March 1954
[c] The Army-McCarthy Hearings of 1954
[d] McCarthy’s legacy