AP World History Unit One: The Global Tapestry from 1200 to 1450 PowerPoint. A comprehensive overview of key East Asian countries in the post-classical period from 1200-1450. Students will primarily look at China during the Song dynasty with an emphasis on its religious, social, economic, and political characteristics. Students will then look at a comparison of China with Japan, Korea, and Vietnam during the same period in order to gain an understanding of the region in the post-classical period