In the aftermath of the world war 2 what happened to the us economy

B.  There was a major sustained expansion.

Explanation:

There was a major sustained expansion. The war industry led to a huge growth in the GDP, and the fact that many foreign markets needed our goods meant that exports were very strong.

i believe it d) heterogeneous

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom