A 1971 New Jersey law made the common meadow type of which flower the state flower?

In 1969 the Supreme Court ruled that desegregating schools "with all deliberate" what, the famous Brown II phrase, was… A 1969 war between Honduras and El Salvador broke out after qualifying matches for which sporting event? A 1970 act of Congress created which agency that sets standards for workplace safety and health? Which 1970s private-eye series starring James Garner was co-created by Stephen J. Cannell? A 1971 Supreme Court case approved which method of racial integration for Charlotte, North Carolina, schools? A 1972 David Bowie album chronicled the rise and fall of which glam rock persona and the Spiders from Mars? A December 1972 earthquake destroyed most of downtown in which Nicaraguan capital? A 1972 experiment measured which quantity more precisely at about 186,282 miles per second?