Which of these is a compound-complex sentence? On the beach near my school, we built a gigantic sand castle.
I bought a model car kit, and I built the model because I wanted to start a collection.
Our school received a special award from the governor because we had perfect attendance.
Some of the kids in my neighborhood wanted to work on community service projects.

C)

The answer is "Our school received a special award from the governor because we had perfect attendance."

answer; /// the correct answer to the above statement is (a) because of the decline on native american labor forces;

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.