Answer
How did Gavrilo Princip become involved in the plot, and what motivated him to become an assassin?
Gavrilo Princip became involved in the plot to assassinate Archduke Franz Ferdinand of Austria because he was an active member of the Bosnian revolutionary group called the Black Hand. This group aimed to liberate Bosnia from Austro-Hungarian rule and create a South Slavic nation. The Black Hand saw the Archduke's visit to Sarajevo as an opportunity to send a political message and sought to assassinate him.
Princip's motivation to become an assassin was fueled by a combination of political idealism and a desire for Bosnia's independence. He was a nationalist who believed in the principles of Yugoslavism, which called for the unification of all South Slavs under one nation. Bosnia, predominantly populated by Serbs, Croats, and Bosniaks, was under Austro-Hungarian rule at the time, which Princip saw as an oppressive foreign occupation.
Princip's involvement with the Black Hand provided him with an avenue to act on his nationalist beliefs and contribute to the cause of an independent Bosnia. He and his co-conspirators saw the assassination of the Archduke as a way to provoke Austria-Hungary and create a catalyst for the liberation of Bosnia. Thus, Gavrilo Princip's motivation to become an assassin was driven by his nationalist fervor and his commitment to the cause of Bosnian independence.