system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
What started World War 1?


assistant
Many historians consider the assassination of Archduke Franz Ferdinand of Austria the start of World War 1. Soon after the assassination Austria declared war on Serbia. Within four weeks their allies declared war on one another.