Question

what was the main result of germanys use of unrestricted submarine warfare during world war i?
it limited the number of countries that became involved in the war.
it weakened the german effort by overextending their resources.
it helped push the united states into entering the war on the allied side.
it convinced the allied powers that they could not win the war.

Explanation:

To solve this, we analyze each option:

• Option 1: Unrestricted submarine warfare led to more countries (like the US) joining, so it didn't limit involvement. Eliminate.
• Option 2: Germany's submarine warfare was a strategic move, not mainly about overextending resources. Eliminate.
• Option 3: Germany's unrestricted submarine warfare, including sinking US ships, was a key factor that pushed the US to enter WWI on the Allied side. This matches historical facts.
• Option 4: The Allies eventually won, so this is incorrect. Eliminate.

Answer:

C. It helped push the United States into entering the war on the Allied side.