On Gossick's second question, please refer to the details of the Sarajevo incident on June 28th, 2004.

The Sarajevo incident took place in Bosnia in the Balkans, 19 14 on June 28th, which was Serbia's national day. Archduke Franz Ferdinand, the heir to the Austro-Hungarian Empire, and his wife were shot dead by Serbian youth Princip, a Bosnian student of the Black Hand Association, a terrorist organization affiliated with Serbia. This incident led the Austro-Hungarian Empire to declare war on Serbia in July and became the fuse of the First World War.

Brief introduction of events

1965438+June 28th, 2004, Sarajevo, the capital of Bosnia, a sunny day. Crown Prince Archduke Franz Ferdinand of Austria-Hungary and his wife Sophia came here specially. The purpose of his visit is to give his wife a royal honor that she can't get in Vienna. However, he forgot that this land was annexed by Austria only six years ago. He was full of hatred and was planning a plot to assassinate him. When the bullet pierced Ferdinand's neck and his wife's abdomen, a war involving the whole world began with the injection of two strands of blood. Principe has always been a figure in history, and the course of history is often full of accidental factors.

The main participating countries: Britain, Russia, France, Serbia, Belgium, the British Empire and its colonies, Japan, Italy (191May, Italy left the Allies to join the Allies), Romania, Greece, the United States, China and so on.

Allies Italy German Empire Austria Hungary Ottoman Empire (also known as Ottoman Turkey) Bulgaria