A Zhou-period state on the western frontier that expanded over centuries to conquer all rival Chinese states and transform itself into the Qin Empire in 221 BCE.
The state of Qin transformed into the Qin dynasty in 221 BCE when King Zheng of Qin conquered the last rival Warring States kingdom and proclaimed himself the First Emperor (Qin Shi Huang), unifying China.
The atlas holds 2 border frames for State of Qin — the shape you scrub through changes in 900 BC · 316 BC.
Background on the Zhou states system of which Qin was the ultimate successor.
Primary source: Sima Qian's foundational history chronicling Qin's rise from a frontier state to the empire that unified China.