What was the main result of germany’s use of unrestricted submarine warfare during world war i? a) it limited the number of countries that became involved in the war. b) it weakened the german effort by overextending the country’s resources. c)it push the united states into entering the war on the allied side. d) it convinced the allied powers that they could not win the war.

C. After a german submarine sunk the RMS Lusitania which had American passengers on board the U.S. declared war on Germany.

the correct answer is C

a agree i agree becuase it is very importnat for example it can tlel you about your past for exmaple   the first culture was the semerians which people are sitll tryignt o uncover there secrets the wall is just anohter treasure that has thousnads of secrets in it to be uncovered