Hi,
The Lusitania was sunk in 1915 and the US did not enter the war until almost two years after the sinking. The sinking of the Lusitania and the American reaction to that sinking caused the Germans to temporarily halt their policy of unlimited submarine warfare.
Side note: Found the answer with this link :)
https://www.enotes.com/homework-help/what-impact-did-sinking-lusitania-have-what-came-418703
Carl Vinson's work <span>in naval expansion aided in defense needed during the Pearl Harbor attack</span>
2nd one because those were the areas with the best water to grow the planbts.
