<span>It was much more advanced than the medicine practiced by other cultures of the time</span>
The American Recovery and Reinvestment Act or ARRA failed to address the shortage of the availability of qualified workers in the labor force. It is supported by the high percentage of the existence of less-qualified workers that can still be seen widely.
They used the caste system as a form of a social class and ranked everyone based off of their role and job in their life.