Why was the ming dynasty important

Events:
1. Jingnan Battle: Zhu Di (Emperor Chengzu) rose up to get the throne from Zhu Yunwen.
2. Zheng He's expedition: It helped to open the Silk Road on the sea.

Science:
Many scientific books appeared in the early and middle of the dynasty, namely, medical book Compendium of Materia Medica by Li Shizhen, Song Yingxing's Heavenly Creations about handicraft industry, Xu Guangqi's Complete Treatise on Agriculture and Xu Xiake's Travels of Xu Xiake. Besides, a gun named Huochong Gun was invented then.