The opening up of Africa.
Henry Morton Stanley probably played a more important part in the "opening up' of Central Africa than any other single explorer. He and many associated with him have accentuated the important role played by Burroughs-Wellcome tablets and tinctures in these exploratory expeditions.
D000350:Africa, Central; D004345:Drug Industry / Q000266:history*; D004349:Drug Packaging; D049672:History, 19th Century; D049673:History, 20th Century; D004364:Pharmaceutical Preparations / Q000266:history*; D012013:Reference Books; D015030:Zimbabwe
D004364:Pharmaceutical Preparations