I believe so, if you’re talking about Uncle Tom’s Cabin. Leaving helped them to let go of their past and start fresh.
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
By a boat I am pretty sure
Sorry can't help you, but you can look it up on google