Answer:
https://www.islamweb.net/en/article/200326/significance-of-the-islamic-hijri-calendar
Explanation:
It would be "d. eight-hour days" that was not a problem faced by workers in nineteenth century mills or mines, since legislation advocating for strict working hours did not come about until the Progressive Era.
Every day, the US Congress makes thousands of decisions.
In a direct Democracy, the citizenry would need to all be involved in each of these decisions. There are so many, that it would basically turn into a full time job for all citizens.
So, to allow for the majority of people to engage in trade or commerce, indirect democracy allows the election of representatives who act on behalf of the citizenry.