How did rickenbacker first became famous

How was the united states involved in the russo-japanese war? a) president roosevelt negotiate peace. b) the united states fought on japan’s side. c) the united states fought on russia’s side. d) president roosevelt convinced britain to stay neutral.

    which of the following was anecological  result of european exploration from 1400 to 1800?   a.  increased trade with east asia      b.  the spread of epidemic diseases      c.  expansion of english territory      d.  the spread of christianity

How did the us change it’s economy to provide supplies for the war effort?