There were actually several building techniques that were introduced by the Romans, but perhaps the most important was the bridge building technique that allowed bridges to be built without supports.
The choices can be found elsewhere and as follows:
Ambrogio Lorenzetti
Duccio
Giotto
<span>Cimabue
I believe the correct answer is the first one. </span>The city council of siena commissioned Ambrogio Lorenzetti to fresco the city hall with scenes of good and bad government. Hope this answers the question.
