A is the answer to this question.
During a war, some governments change their economic system from a market economy to a command economy. This is done out of necessity as resources may become scarce.
D. Pullman car was a train car. Standard time was used by railroads so trains would not crash into each other. Standard gauge was the size of
Tracks so any railroad could use it.
<h2>
Answer:</h2><h2>Alice's Adventures in Wonderland</h2>
To answer your question should be, B.
