(1) There has been a recent disappearance of honey bees, referred to as Colony Collapse Disorder. (2) Many theories have been advanced to explain this disappearance. (3) One theory blames pesticides, which cause an insect to become lost and confused. (4) Another explanation is that stress is lowering bees’ immune systems. (5) Still other experts blame IAVP, a parasitic virus that kills bees. (6) All experts agree that more research is needed to develop a single theory. Which is the topic sentence of this paragraph?

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.

i think it's either 'to expose the corruption of the communists in russia', or 'to criticize animal brutality by communists in russia.'  

hope this ! : )

it is an infinitive phrase with a subject.

to convince americans of the importance of others.