Respuesta :

Answer:

Required Answer:-

Austria started world war 1

Explanation:-

  • The Balkans battle Between Countries of Europe between 1912-1913 had already become the preliminary reasons .
  • But In 1914 when The pressure between Serbia and Austria due to Adiatric Sea Collisions was going on .
  • Then The prince and princess of Australia Had been killed by a member of blackhand gang .
  • Austria directly suspect Serbia for this.
  • On July 23, 1914 Austria sent a 10 pages agreement for Serbia .
  • Serbia signed most of treaties of them on the pressure of western countries but many left.
  • Austria Reacted on it and declared war against Serbia on July 28,1914.