If you’ve ever looked at the growth trajectory of companies like HubSpot, Canva, or Slack and wondered how they did it, you ...

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A version of this story appears in the September 2020 issue of National Geographic magazine. Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.

The Republic of Zimbabwe is a lower-middle-income country with strong human and natural capital and considerable growth potential. Over the past two decades Zimbabwe has experienced significant ...