Assassination of the German Ambassador in Peking, Boxer Rebellion, China, 16 June 1900. The Boxer Uprising or Boxer Rebellion was a Chinese rebellion from November 1899 to September 7, 1901 against foreign influence in trade, politics, religion and technology in China during the final years of the Qing Dynasty. The murder of Klemens Freiherr von Kettler prompted the foreign powers to declare war on China. Britain, France, Germany, the US, Russia, Japan, Italy and Austria-Hungary formed the Eight Nation Alliance and sent troops and warships to China. French trading card advertising Chocolat-Louit. The artist is unknown.