21
just break it down next time like this for example, 10+9 is 19 then add 2 = 21 subtract 3 which then becomes 18 instead of just adding 2 do this (2+1 =3) so 18 plus 3 is 21
D.germany continued unrestricted submarine warfare,leading to more American citizens dying.
Your answer is:
" The bombing of Pearl Harbor".
Hope this helps!!
(Brainliest)
Answer:
Wartime Production
President Wilson created the War Industries Board to set production standards and coordinate railroad and shipping efforts. The National War Labor Board secured the cooperation of American workers by setting higher wages and an eight hour workday, and recognized the right