Also in the 1960s and 1970s, national awareness of environmental issues and consequences led to the passage of many laws designed to correct the mistakes of the past and help prevent similar mistakes in the future. One such law was the Endangered Species Act, passed in 1973. The FWS is required by this law to restore endangered species that have been eliminated, if possible. By 1978, all wolf subspecies were on the federal list of endangered species for the lower 48 states except Minnesota. (NPS policy also calls for restoration of native species where possible.)
[{"animals": "n/a", "endangerment_level": "n/a", "recovered": "n/a"}]
[{"animals": "n/a", "endangerment_level": "n/a", "recovered": "n/a"}] [{"animals": "wolf ", "endangerment_level": " endangered species", "recovered": "n/a"}]