When did first world war happened?

The first world war was first happened in 28 july 1914 to 11 November 1918.It started after the assassination of archduke franz Ferdinand his murder turns into the one of the great war with europe which ended in 1918 four years of starting.The World war 1 is remembered because of destruction it caused many people were killed without any fault they were killed because of the two countries fight.

In the twentieth century, the world witnessed two world wars that reshaped the political landscape like none other before them. The first one was in 1914, and it began when Serbia assassinated Archduke Franz Ferdinand of Austria-Hungary. The second was in 1939 and started with Nazi Germany invading Poland under false pretenses. Both events were very costly in human lives over 1 million people died per war but they also led to many advancements of technology.