From around 403-221 B.C.E. the different states of China were at war with each other deeming this era, the warring states period. During this time, advancements in military tactics and weaponry and a rulers thirst for more land, power or wealth allowed the different states to become more independent. Around 350 B.C.E the development of the crossbow added immense “power” to the states’ military due to the extended range of the bow. However, with the development of the crossbow came a way to help defend against it and armies started wearing leather armor, sometimes with iron helmets. Later in this period, cavalry were also introduced, which reduced the need for chariot-riding aristocracy. Due to the introduction of these new technologies
