Why was control of the atlantic ocean essential to great britain’s success in world war ii? a. britain depended on the atlantic for overseas communication. b. britain depended on fishing the atlantic waters for food. c. britain was an island nation dependent on trading to keep its economy strong. d. britain was an island nation dependent on shipping for the supplies it needed.

Atlantic control for Britain was crucial, in order to stop pesky, but well designed and constructed German U-Boat (Unterseeboots or Underseaboats) from sinking ships carrying with them important shipments of supplies to Britain, which were very important to the war effort.

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".