It's part of your civil dutie as a citizen and It is the law for people to actively contribute to society.
It promoted the (relatively) rapid diffusion of immigrants, language, and domesticated crops and animals. Those factors are examined in excellent detail in Jared Diamond's book, "Germ, Guns and Steel" which I highly recommend for anyone studying the development of world cultures. It's a long read, but well worth it.
Quoting from the paragraph " Those who supported him BELIEVED that the Vietnam war would end in a US victory"
What does the poster look like and say?
