Answer:
Sorry it is not clear . I am sorry
During the late 19th century urban political machines and those that ran them promised business contracts, government jobs, and money for the poor immigrants in exchange for votes.
I'm not entirely sure which area location C is referring to, but it would have to be the closest. Location 1 is Poland itself in the image you have provided, and the Polish Corridor is that small strip of land in orange right below the letter C. Hope this helped!