Value: Medieval
Confidence: Canon
Steel, navigation, widespread metalworking.
Value: 0.48
Min: 0.4
Max: 0.55
Confidence: CalculatedGuess
Pottery (ovens), metal working, wind/water mills. On the other hand, the majority still lives in the countryside like in the Bronze Age.
Total might be 300 W. But this is just a guess to indicate progress, could be 200 W or 400 W.
Value: 200e6
Min: 150e6
Max: 250e6
Confidence: Canon
References:
Quick Wikipedia research. Error bars guestimated.
Value: 4
Confidence: Canon
TL 4 Mechanical. Steel, gunpowder arriving, navigation, windmills. Hardest tech: steel production and early gunpowder weapons.
Value: 4
Confidence: Canon
Steel, widespread metalworking, navigation, gunpowder arriving. Class 4 Medieval.
High-technology (architecture) is down from the Romans. But population is up and metal working is more wide spread. Long range road travel is more common.