The main advantage of European honeybees is that they can pollinate introduced European crops efficiently, and native pollinators can't. The flip side is that

The main advantage of European honeybees is that they can pollinate introduced European crops efficiently, and native pollinators can't. The flip side is that European honeybees can not pollinate native crops very well. For that, the native pollinators are very efficient. Native pollinators are threatened by the feral colonies of European honeybees and their introduced diseases like nosema, varroa, mites, and foulbrood. It's like smallpox blankets all over again as infected honeybee colonies are trucked all over the country to spread pollen and disease on various introduced European cops.