Sometimes, the most meaningful journeys are the ones we don’t plan. This summer, I found myself on such a journey, starting in Sarajevo, Bosnia, and winding my way up to Gdańsk, Poland. I didn’t set out with a specific itinerary in mind, but as I moved from place to place, it became clear that I was retracing the steps of history, from the origins of World War I to the aftermath of World War II. Sarajevo: The City Where It All Began   Sarajevo is a city where history doesn’t just linger; it lives in the streets, in the buildings, in…