what was the main result of germanys use of unrestricted submarine warfare during world war i?\nit limited…

what was the main result of germanys use of unrestricted submarine warfare during world war i?\nit limited the number of countries that became involved in the war.\nit weakened the german effort by overextending their resources.\nit helped push the united states into entering the war on the allied side.\nit convinced the allied powers that they could not win the war.
Answer
Answer:
It helped push the United States into entering the war on the Allied side.
Brief Explanation:
Germany's unrestricted submarine warfare targeted American - flagged ships, causing American losses and public outrage, which led to U.S. entry into WWI on the Allied side.