28 feb 1899 año - Secretary of State Hay sends first open door note.
Descripción:
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.Añadido al timeline:
fecha:
28 feb 1899 año
Ahora mismo
~ 125 years ago
