Which event in the HIV/AIDS timeline happened LAST? (1 point) Responses American doctors observed an atypical combination of symptoms in men. American doctors observed an atypical combination of symptoms in men. Expanded airline travel increased the spread of HIV in Africa. Expanded airline travel increased the spread of HIV in Africa. French and American researchers identified the virus that causes AIDS. French and American researchers identified the virus that causes AIDS. HIV traveled from Africa to the United States, undetected by epidemiologists.
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Expanded airline travel increased the spread of HIV in Africa.
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