The 1970s–1980s diffusionism debate over Egyptian–Mesoamerican contact

Record summary

Throughout the 1970s and 1980s, books, expeditions, and popular scholarship continued debating whether similarities between ancient Egyptian, African, and Mesoamerican monuments or iconography indicated transoceanic contact. Thor Heyerdahl's reed-boat experiments supplied a feasibility argument, while most professional archaeologists emphasized independent development, selective comparison, and the absence of securely documented contact assemblages. This is a research lead for tracing how experimental voyages entered historical argument, not evidence that ancient Egyptians or Mesoamericans crossed the Atlantic.