I believe the answer is: Rapid development of housing:)
Hope this helps!
Answer:
modern liberalism in the US is the dominant version of liberalism in the US. It combines ideas of civil liberty and equality with support for social justice and a mixed economy according to lan Adams, all American parties are liberal and always have been.
B - Dramatic Increase in Elementary School Enrollment in the 1970's
A is incorrect as job opportunities are not proportionate to birth rate.
C is incorrect as social security collections do not occur until you are of age - 62.
D is incorrect as the youth culture is always created with whatever youth is present - it's mostly referred to as the young culture or kids culture more than anything and would not be created only because of a baby boom.
Hope this helps!