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The importance of the Battle of the Marne is that it halted Germany's advance into France, saving Paris and forcing the failure of the Schlieffen Plan, which had intended a quick German victory. -
The Battle of Verdun was important for its immense human cost, its strategic significance as a turning point that helped end the German offensive, and its psychological impact on both sides. -
The assassination of Archduke Franz Ferdinand was the catalyst for World War I because it triggered a chain reaction of declarations of war between European powers due to pre-existing alliances and tensions. -
The importance of neutrality in World War I was to initially keep the United States out of the conflict for both political and economic reasons, allowing for potential profit and avoidance of casualties. -
The sinking of the Lusitania was important because it enraged the American public, leading to widespread anti-German sentiment and putting pressure on the U.S. to enter World War I. -
The importance of the Sussex Incident is that it was a major turning point in World War I that threatened to bring the United States into the war. -
The Battle of the Somme was a significant event in WWI because it was one of the costliest battles in history, highlighting the brutal realities of trench warfare, and it led to important tactical and operational lessons that helped the Allies win the war. -
The Zimmermann telegram was important because it was a secret proposal from Germany to Mexico during World War I that helped sway American public opinion against Germany and ultimately contributed to the U.S. entering the war. -
The importance of Germany's unrestricted submarine warfare lies in its role as a critical factor that pushed the United States to enter World War I, ultimately tipping the balance in favor of the Allies. -
The importance of the United States entering World War I lies in its decisive impact on the war's outcome, the shift in the global balance of power, and the establishment of the U.S. as a major world power. -
The Selective Service Act's importance lies in its role as a mechanism for large-scale military conscription, allowing the U.S. government to draft citizens into military service when voluntary enlistment is insufficient.