Politics in the British Isles the understanding of a Europe that exists in a range of configurations; from large scale political union, to provinces, dependencies, and micro-nationalist regions (such as Cornwall), each with their contribution and presence; Reconsider relations across our island grouping in light of issues regarding the management and use of the environment." Politics in the British Isles The British Isles comprise two sovereign states, Republic of Ireland and the United Kingdom, and three dependencies of the British Crown, Guernsey, Jersey and the Isle of Man. Ireland is a unitary state and a republic. Since 1998, it shares certain common institutions with Northern
Introduced species of the British Isles are susceptible. The grey squirrel is a carrier of the squirrel pox virus which kills red squirrels but not grey squirrels. The European crayfish is susceptible to crayfish plague which is spread by the introduced signal crayfish. Unlike some other environmental problems such as pollution, the effect of an introduced species is not a single event. Once a species has been introduced to an island, the problems may persist and escalate as the species spreads further. Coypus "(Myocastor coypus)", large semi-aquatic rodents native to South America, were introduced to the British Isles in 1929 when fur farms were set up