The National War Labor Board, commonly the War Labor Board (NWLB or WLB) was an agency of the United States government established January 12, 1942 by executive order to mediate labor disputes during World War II.
Superseding agency: Wage Stabilization Board
Preceding agency: National Defense Mediation ...
Formed: January 12, 1942
Agency executive: William Hammatt Davis, chair
Which was Louis xvi 's house
I believe the answer is b because there were often wars between African clans and the best way to get rid of the prisoners and get things they needed at the same time was to trade them.