What natural avenges did the kingdoms of west africa have

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

equal pay act of 1963. the equal pay act, signed in to law by president john f. kennedy on june 10, 1963, was one of the first federal anti-discrimination laws that addressed wage differences based on gender. they felt that this would prevent employers from undercutting future wages for men.