28 févr. 1899 - Secretary of State Hay sends first open door note.
Description:
he Open Door Policy is a term in foreign affairs initially used to refer to the United States policy established in the late 19th century and the early 20th century, as enunciated in Secretary of State John Hay's Open Door Note, dated September 6, 1899 and dispatched to the major European powers.Ajouté au bande de temps:
Date:
28 févr. 1899
Maintenaint
~ Il y a 125 ans
