Answer:
The most direct way nationalism caused World War I was through the assassination of Archduke Franz Ferdinand, who was the heir to the throne of the Austro-Hungarian Empire. ... Thus, nationalist movements broke out across the Slavic territories. Among the most militant nationalists were the Serbs.
This is what a common wombat looks like. Cute right?
At first, the Native Americans thought that the settlers were invaders and the Natives would often attack their crops or farms. It wasn't near as bad as what the colonists did to the Natives later, but it was still troublesome. Many natives however did not hate the settlers and even helped them. Due to such help people now celebrate Thanksgiving. Later, colonists started expanding and the rest is history.