The Endangered Species Act of 1973 (ESA; 16 U.S.C. § 1531 et seq.) is one of the few dozens of United States environmental laws passed in the 1970s, and serves as the enacting legislation to carry out the provisions outlined in The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). The ESA was signed into law by President Richard Nixon on December 28, 1973, it was designed to protect critically imperiled species from extinction as a "consequence of economic growth and development untempered by adequate concern and conservation." The U.S. Supreme Court found that "the plain intent of Congress in enacting" the ESA "was to halt and reverse the trend toward species extinction, whatever the cost." The Act is administered by two federal agencies, the United States Fish and Wildlife Service (FWS) and the National Oceanic and Atmospheric Administration (NOAA). 

One species in particular received widespread attention—the whooping crane. The species' historical range extended from central Canada South to Mexico, and from Utah to the Atlantic coast. Unregulated hunting and habitat loss contributed to a steady decline in the whooping crane population until, by 1890, it had disappeared from its primary breeding range in the north central United States. It would be another eight years before the first national law regulating wildlife commerce was signed, and another two years before the first version of the endangered species act was passed. The whooping crane population by 1941 was estimated at about only 16 birds still in the wild.
What year was the Endangered Species Act instituted?
Were there many laws such as this passed in this time period?
What animal received lots of attention?
Name something that caused their population to decline?
And what else?
What year did is vanish from its main range in the U.S.?
In what section of the U.S.?
How many years passed before first national law concerning regulation of wildlife commerce was instituted?
How much additional time before an act concerning endangered species was enacted?
What was the number of whooping cranes in the wild in 1941?
Did a President enact a certain law associated with endangered species?
What was it called?
In what year was it made law?
What month?
What day of the month?
What court made a finding about the ESA?
Were federal agencies involved in carrying out the act?
Name of one of them?
And the other?
What abbreviation is it known by?
1973
1973
Yes
one of the few dozens 
the whooping crane
the whooping crane
Unregulated hunting
Unregulated hunting
habitat loss
habitat loss
1890
1890
the north central
the north central
another eight years
 another eight years
another two years
another two years 
about only 16 birds
about only 16 birds
Yes
President Richard Nixon
The Endangered Species Act
The Endangered Species Act
1973
1973
December
December 
28
28
The U.S. Supreme Court
The U.S. Supreme Court
Yes
The Act is administered by two federal agencies
the United States Fish and Wildlife Service
 the United States Fish and Wildlife Service
the National Oceanic and Atmospheric Administration
 the National Oceanic and Atmospheric Administration
NOAA
NOAA