answers: 1979
context: billion by 2080. In spite of some criticism inside the party, the plan (also referred to as the Family Planning Policy) was formally implemented as a temporary measure on 18 September 1980. The plan called for families to have one child each in order to curb a then-surging population and alleviate social, economic, and environmental problems in China. Although a recent and often-repeated interpretation by Greenhalgh claims that Song Jian was the central architect of the one-child policy and that he "hijacked" the population policymaking process, that claim has been refuted by several leading scholars, including Liang Zhongtang, a leading </s> internal critic of one-child restrictions and an eye-witness at the discussions in Chengdu. In the words of Wang et al., "the idea of the one-child policy came from leaders within the Party, not from scientists who offered evidence to support it” Central officials had already decided in 1979 to advocate for one-child restrictions before knowing of Song's work and, upon learning of his work in 1980, already seemed sympathetic to his position. Moreover, even if Song's work convinced them to proceed with universal one-child restrictions in 1980, the policy was loosened to a "1.5"-child policy just five years later, and </s> possess a banned item for any reason are always (if the policy is followed) to be punished. In the United States and Canada, zero-tolerance policies have been adopted in various schools and other education venues. Zero-tolerance policies in the United States became widespread in 1994, after federal legislation required states to expel any student who brought a firearm to school for one year, or lose all federal funding. These policies are promoted as preventing drug abuse and violence in schools. Critics say zero tolerance in schools have resulted in punishments which have been criticised as egregiously unfair against students and
question: when was the one child policy put in place