12. The Blast Furnace
The arrival of the blast furnace in medieval Europe marked a turning point in metallurgy. Unlike earlier furnaces, this powerful invention could reach much higher temperatures, allowing for the efficient smelting of iron ore. As a result, iron production soared, making it possible to mass-produce durable tools, weapons, and building materials. This technological leap supported both agricultural and military advancements, fueling economic growth and paving the way for future industrial breakthroughs.
