Economics & Finance / Economic Theory / Development Economics

Why Mountains Make Africa Richer (A Historic Paradox)

The Ruggedness of Terrain and the Slaves Taken: Evidence from Africa

Nathan Nunn, Diego Puga

Think bad geography always makes you poor? Think again. In Africa, rugged terrain—mountains, cliffs, caves—actually boosts modern economies. This video unpacks the landmark 2009 study by Harvard’s Nathan Nunn and Diego Puga. They reveal a jaw-dropping paradox: while mountains wreck infrastructure everywhere else, in Africa they saved ancestors from the slave trade. The result? A 42% wealth dividend today. We dive into the data: how micro-ruggedness measured by satellites explains why flat land was a death trap, and how jagged rocks became a shield. You'll see the direct link between historical trauma and modern poverty, and why fixing institutions matters more than paving roads. This isn't just history—it's the key to understanding global inequality.