Which of the following did the us produce more of during world war2 than germany, japan, and italy combined?

What effect did john hay’s open door policy letters have on the imperial powers of britain, france, germany, russia, and japan? a. it provoked the imperial powers to declare war on the united states. b. it caused the imperial powers to restrict trade in their trade with china. c. it warned the imperial powers that the united states would soon declare war on china. d. it signaled to those powers that the united states would take a larger role in world affairs than before.

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

How did the united states obtained the purchase of floridia to extand its frontiers to the pacific ocean