Answer:
The real and main reason was The Assassination of Archduke Francisco Ferdinand heir to the throne of Austria-Hungary in his visit in Bosnia. The Hero Gavrilo Princep killed him because he want his country to have independence.
There are also reasons like Imperialism, Nationalism, Militarism and many otherd
Native Americans or Indians,some tribes are Nisenan Naidu and Muwok
Religion played a major role in the American revolution by offering a sanction for opposition to the British