Explain What does this statement mean: “The United States has always been a magnet for immigrants.”

This means that immigrants always come to The United States because they are attracted to it. It this sense, they used the word magnet, because magnets attract things. So, the United States attracted a lot of immigrants.

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well stockyards mean a large yard containing pens and sheds, typically adjacent to a slaughterhouse, in which livestock is kept and sorted. and i'm assuming that by party you   mean a large group of people which does make sense because chicago is a very crowded place much like new york. stockyards tend to take up a lot of room due to needing the area for pens to keep animals in and the fact that stockyards are usually right by slaughterhouse where they process and distribute the product. so its much like a zoo but with some dead animal products close by.

with what words? i dont see them