Time Traveling with OHM
Today I've been playing with OpenHistoricalMap and exploring how it can be used to create a map that visualizes how a country's borders have changed over time. History is rarely static, but few nations illustrate the fluidity of borders quite like Poland. Over the last two centuries, the Polish state has expanded, contracted, and even physically shifted hundreds of miles across the European plain. My Poland Border Map visualizes three pivotal snapshots of Poland over time: the semi-autonomous Congress Poland of 1815, the restored Second Republic of 1939, and the modern "shifted" borders of 1945. The map allows you to toggle between three distinct periods of Polish history. For example, by switching eras, you can see the dramatic "westward slide" that occurred after World War II - when Poland lost its eastern territories (Kresy) but gained a massive industrial coastline and former German lands in the west. What is OpenHistoricalMap? Think of OpenHistorical...
