The political boundaries are one of the several types of boundaries. These boundaries are set strictly because of political reasons. This includes spheres of interest, direct or indirect control, but also political strength, or lacking of it. These boundaries change though. The reason why they change is the constant change of power between the countries. While some become stronger, some experience decline in power, and that naturally results in changes in the political boundaries in the favor of the stronger side at the moment.
One section of the food web would be greatly impacted: the section containing the insects and insect-eating animals. Without insects and possibly spiders, there would be no food for the toads and insectivorous birds.
