People can't save themselves, that's why we have to rely on God, He's the only one who can save anybody.
We still think that direct exposure to filth/decay can give us diseases and it’s probably true.
The Pullman strike ended with widespread violence and the President at the time (Grover Cleveland) sent out the army to stop the strikes from obstructing the trains from running. The Pullman Strike was a boycott which shut down much of the passenger and freight trains west of Detroit because of reduction wages. Many of these workers were laid off and had their wages lowered, but did not have their rent lowered which was essentially unfair, as they all lived in towns for train workers.
The house of wisdom was founded by Al- Ma’mun and build in Baghdad. It’s main purpose was to translate literature and knowledge.
Hope that helped :)