Answer: (B)
The period of increased government spending was characterised by an "expansion" of the economy of the United States.
Explanation:
The Economic expansion that occured in the United States after World War II was also called the "golden age of capitalism". It was a period of high growth and low unemployment.
The United States government made important efforts to sustain the economy during and after the war, through increased spending. As a result, the country was able to position itself as an economic powerhouse.