Final answer:
The Subcommittee on Investigations was the Senate organization that Joseph McCarthy used to launch his investigation and accusations.
Step-by-step explanation:
The Senate organization that Joseph McCarthy used to launch his investigation and accusations was the Subcommittee on Investigations.
Joseph McCarthy used the Senate Subcommittee on Investigations to launch his infamous investigations, a process which led to the term 'McCarthyism' to describe his accusatory tactics.
The Senate organization that Joseph McCarthy used to launch his investigations and accusations was the Subcommittee on Investigations. Created within the Senate Committee on Government Operations, which he chaired, McCarthy's pursuit of alleged Communist influences and activities gave rise to what is now known as McCarthyism. His aggressive tactics included making bold, unsubstantiated claims against individuals and organizations without providing adequate evidence.
It is important to clarify that, contrary to some confusion, the House Un-American Activities Committee (HUAC) was a separate entity within the House of Representatives and not the platform used by McCarthy for his Senate investigations. The HUAC conducted its own searches for disloyalty and subversive activities, most notably in the Hollywood film industry. McCarthy, on the other hand, operated primarily through the Senate Subcommittee on Investigations.