Due to the success of export business in the United States, Merck set up a branch in new york 1887. 1889, George Merck, the grandson of Heinrich Emanuel Merck, took over the operation. In 189 1, Merck &; The company was established. Merck lost many overseas subsidiaries in World War I, including Merck &; Company. Today, the two companies have no connection except the common name "Merck". For business reasons, both parties agree that Merck is exclusively used by Merck in the United States and Canada, while Merck is exclusively used by Merck in Germany in Europe and other parts of the world. Accordingly, Merck &; The Company's business operations outside North America shall be conducted by Merck Sharp &; Dome or MSD Sharp &; In the name of Dohme (Merck). Merck's business in North America will be carried out under the name of EMD (EMD).