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

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.