How does the author’s use of rhetoric in paragraph 1 introduce and advance her purpose?

well, number 1, the 1920s was not economically prosperous until the start of the lend-lease act, which employed large amounts of people in producing equipment for the allies.

b. world war ii is your answer, because wwi had already ended at 1918, and the cold war was after 1945.

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the writer needs to avoid using abbreviations and check spelling before sharing.