The rise of the state of nationalism in all countries, including Germany and France, created political and national pride. France and Germany were espeically filled with nationalism. After France won World War 1, they were happy. But since Germany had to pay repairs, they were mad. They began conflict about the Alsace-Lorraine area.
In general, this movement had a negative impact since lots of the expansion involved moving into territories that were controlled by European nations. Although most of the time physical conflict was avoided.
