Which of the following was not a result of japan’s attack on pearl harbor?
a.
the u. s. declared war on japan.
c.
the u. s. abandoned their isolationist view.
b.
the u. s. officially entered the world war.
d.
japan joined the axis forces against america and britain.

One drawback of voluntary trade is that it a.requires two groups to use a common language b.can make one group dependent upon another for necessary goods c.doesn't occur unless there is a shortage of goods for at least one group d.forces groups to rely on themselves to produce all the goods they need