MAR 6 1972, MAR 4 1972, OCT 16 1978, OCT 22 1978; BARBARA W. TUCHMAN, HISTORIAN AND AUTHOR; She says [Getty Images]

MAR 6 1972, MAR 4 1972, OCT 16 1978, OCT 22 1978; BARBARA W. TUCHMAN, HISTORIAN AND AUTHOR; She says U.S. "missionary impulse" was incorrect.; (Photo By John Beard/The Denver Post via Getty Images) — see more

MAR 6 1972, MAR 4 1972, OCT 16 1978, OCT 22 1978; BARBARA W. TUCHMAN, HISTORIAN AND AUTHOR; She says U.S. "missionary impulse" was incorrect.; (Photo By John Beard/The Denver Post via Getty Images)

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