Complex sentence: The divergence of professional anthropology from medicine was never a complete split as relations between the two disciplines remained constant during the twentieth century, until the development of medical anthropology in the 1960s and 1970s.
Split into simpler sentences: The divergence of professional anthropology from medicine was never a complete split. The relationships between the two disciplines remained constant during the twentieth century, until the development of medical anthropology in the 1960s and 1970s.