Is the name for a vertical column in the periodic table.
A. family
B. period
C. subset

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

if i am correct the answer is going to be a) the federal program of reconstruction ended.

i think the answer's are a) b) and c)

people had jobs and began to work. that’s why the commercial revolution was great.