Which of these groups of nations were called the central powers?

france, britain, and russia

germany, ireland, and mexico

the united states, britain, and france

germany, austria-hungary, and the ottoman empire

His is the name of the group in the house of representatives that, in 1947, began hearings to expose communist infiltration in american life. unfortunately, a good deal of the evidence they used was based on hearsay and conjecture, meaning innocent people were harmed by their findings.