Colonists who lived in the region where the proclamation line did not touch, were angered because they were forced to move towards the cities and ocean. They felt that choosing a home was more important than being under a monarchy that would move them away.
The Eastern Front or Eastern Theater of World War I (German: Ostfront, Russian: Восточный фронт, Vostochny front) was a theater of operations that encompassed at its greatest extent the entire frontier between the Russian Empire and Romania on one side and the Austro-Hungarian Empire, Bulgaria, the Ottoman Empire and the German Empire on the other. It stretched from the Baltic Sea in the north to the Black Sea in the south, involved most of Eastern Europe and stretched deep into Central Europe as well. The term contrasts with "Western Front", which was being fought in Belgium and France.
The use of trench warfare on the Western Front was a major military strategy that led to four years of war on the Western Front during World War 1 (1914-1918). The armies which comprised of millions faced each other in a line of trenches which extended from the Belgian Coast through to the North Eastern part of France and Switzerland. This resulted in combat between the German troops and the Allied forces of Britain, France, and later the United States.