186 1 year is an eventful autumn in world history. Please tell us what happened in North America, Europe and Asia this year.

North America, the United States, civil war, Europe, Russia, the reform and abolition of serfdom, the establishment of the Kingdom of Italy, Romania's declaration of independence, Asia, China and Russia held a Sino-Russian border demarcation meeting in Xingkai Lake. Sino-German trade treaty signed in Tianjin. Empress Dowager Cixi staged a coup in Qixiang. Emperor Xianfeng died, and Aisingiorro Zai Chun ascended the throne. The following year was the first year of Tongzhi.