B this is an obvious answer
The expansion of railroads created more ways for things such as general goods to be shipped elsewhere to buyers or companies. (Hope this helps a bit, sorry for such a short answer.)
They exported teas<span>, </span>salt<span>, </span>sugar<span>, </span>porcelain<span>, and </span><span>spices
They imported </span>cotton<span>, </span>ivory<span>, </span>wool<span>, </span>gold<span>, and </span><span>silver</span>
<span>The greatest challenge of the United States during World
War II is the filing of military supply orders. They suffered lack of resource
support in their fighting forces. And this reason gave them a challenge on how
to win the war. So they decided to mobilize their resource, this mobilization
includes training of their personnel and production of their weapons and equipment.
This industrial mobilization of resources gave them a bigger chance to attain
victory in the World War II.</span>
