What positive developments resulted from the conditions in china during the warring states period ?

The need to have better protection led to innovations in tools and weapons.

Explanation:

It began at a point when the various insignificant city-state rules of the Spring and Autumn period had been incorporated into seven significant contenders and a few insignificant enclaves. It was disturbed by two hundred years of brutality and combat. It profited from the leadership of philosophers who struggled with the king. It encountered strong guidance from feudal chiefs under the king.

c

explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long  

answer; because they must appeal to a broad cross-section of the population;