What caused the second red scare

The second red scare , which occurred immediatley after word war 2, was preoccupied with the preceptionthat national or froeign communites were infiltring or subvertingU.S. society and the federal government.

c or d both can be the answer

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

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