The Zhao state was one of the seven major states during the Warring States period in ancient China. It was located in the northern part of the country and was known for its strong military and strategic location. The state played a significant role in the power struggles of the time, often engaging in conflicts with neighboring states. Founded in the 11th century BCE, the Zhao state reached its peak during the 4th century BCE. It was known for its cultural achievements and contributions to philosophy, particularly through figures like Zhuangzi. However, it eventually fell to the Qin state in 222 BCE, leading to the unification of China.