Banana Cultures

It was interesting to see how this one culture was so dominate on growing and selling bananas that if they didn’t have them their culture would ultimately collapse. One question I had was why are they called the United Fruit Company when first of all they only sell bananas and second I was just wondering why? I was also a little confused about the spray they used. Was is good or bad? Because some workers applied it and others had to wash it off. Also I’ve seen different sizes of bananas before and had a question about if that fungi had anything to do with why some bananas were bigger or smaller at times in the stores and shops or was it just a different type of banana?