What was the purpose of the national labors relations board

The National Labor Relations Board is an independent federal agency vested with the power to safeguard employees' rights to organize and to determine whether to have unions as their bargaining representative.

\Explanation:

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity