In griggs v. duke power, the supreme court established the principle that

The case established the legal precedent for“disparate-impact” lawsuits  

he Supreme Court held that employment tests must be “related to job performance.” In its ruling the court held that Title VII of the 1964 Civil Rights Act requires employers to promote and hire based on a person’s ability to perform the job

in the 1950s, country music came into its own before rock-n-roll took off in the 60s while jazz and classical music continued to innovate

c, because the american revolution was from 1765 to 1783.