Groundbreaker is the starting title for Magnus, a Governor in Civilization VI: Rise and Fall.
Effects[]
+50% yields from plot harvests and feature removals in city.
Civilopedia entry[]
“Breaking ground” is the start of construction on a building, and can be used more generally to mean the start of any project. It is the point at which a plan goes from being theoretical to coming into physical being, and as such has considerable ceremonial importance.