5 h 16 m, 23 jul 1914 año - Austria-Hungary delivers ultimatum to Serbia
Descripción:
- Austria-Hungary, backed by their ally,
Germany, delivered an ultimatum to Serbia
- although Serbia offered to submit to
arbitration, they began to mobilize their army
Añadido al timeline:
fecha:
5 h 16 m, 23 jul 1914 año
Ahora mismo
~ 111 years ago