What architectural building technique did structure introduce and what did this later evolve into to build the tholos?

The architectural technique introduced by the structure of corbel arching involved stacking stones in a way that each layer projected slightly inward, creating a dome-like form. This method later evolved into the construction of tholos, which are beehive-shaped tombs or structures that used a true arch and a more sophisticated form of vaulting to achieve their distinctive circular shape. The tholos exemplifies advancements in engineering that allowed for larger and more stable spaces.