About Mary the Cartographer

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Mary Liwhu Marcellinus is a determined, world-travelling cartography expert on a mission to make maps and education accessible to all. With an adventurous spirit and a knack for teaching, Mary’s YouTube channels (Spatial Intelligent and one focused on the African diaspora) reflect her passion for geospatial tech and community building. Her journey has been anything but ordinary, shaped by resilience and a drive to turn hardship into opportunity.


She's blending mapping, teaching, and environmental advocacy. Along the way, she's crafting children's storybooks and productivity systems while exploring creative ways to integrate offline solutions for her MapSmart Kids app. Above all, Mary is dedicated to making the world a more informed, connected place—one map at a time.

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