The British were taxing the tea and being violent towards the colonists so the colonist got mad and dressed as Indians and threw all the tea in the harbor
The Treaty of Versailles is blamed for being the spark of the war. There was a whole bunch of instability in Western Europe and this treaty for Germany at blame for WW1 so Hitler was angry and wanted to take over all of Europe, starting with his country (where he was born) Austria-Hungary
Declaration of independents