Apart form the fact that you have not said where they are invading, the best way is not to import them into a country where they are not indigenous in the first place.
They get angry because that is their territory and you are invading it.
the rabbits leave dropping everywhere which acts as a kind of fertilizer its not just European rabbits though.
wild european rabbits
The largest genera of rabbits are Sylvilagus (mostly cottontails) and Oryctolagus (European rabbits).
European rabbits were introduced into Australia on the first fleet and that solves your Question
Warrens
No, unfortunately. European rabbits, an entirely introduced species in Australia, continue to devastate the countryside, creating an ecological disaster in Australia.
No, it was to keep out invading armies from the north.
The 'European Rabbit' (species) are larger primarily because of evolution, and dietary habits. These rabbits originally evolved, in the Spanish Mediterranean area.
To feed European rabbits
Plants. Rabbits eat plants.
Stop people invading it and destroying it.