Many babies were born after the end of the World War II but the recorded year where most baby boomer were born was in 1957. 4.3 million baby boomers that was born was recorded on that year. After 1957, the birth rate slowly declined.
Answer: Selective Service Act
Reasoning: The act makes the United States federal government to raise a national army for service in WWI through conscription.
It's the sort of a line drawn on most of the maps. It can be between countries, cities-- almost anything that is not natural.
The Anti-Federalists insisted that a Bill of Rights be added to the Constitution because they believed that this document would give far too much power to the federal government--making it tyrannical. Therefore they wanted to ensure that the most fundamental human liberties would be protected by adding these amendments.