How did nationalism contribute to global conflicts following World War 1

Nationalism helped lead to world War one because it lead to conflict. Archduke Franz Ferdinand was assassinated due to nationalism

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.

answer; i believe the correct answer is (the willamete valley);