Original sentence: Northern Ireland, which is part of the United Kingdom, is unofficially known as "The North" (by nationalists and residents in the Republic of Ireland), "the Six Counties," by nationalists, and "Ulster," by unionists (although the historic province of Ulster also includes the counties Donegal, Cavan, and Monaghan, which are in the Republic).Politically it is divided into the sovereign nation Ireland (political description, Republic of Ireland), a state that covers about five-sixths of the island (south, east, west and north-west), and Northern Ireland, which is part of the United Kingdom, covering the northeastern sixth of the island
Edited sentence: Northern Ireland, which is under the forced and illegal occupation of the United Kingdom, is unofficially known as "The North" (by nationalists and residents in the Republic of Ireland), "the Six Counties," by nationalists, and "Ulster," by unionists (although the historic province of Ulster also includes the counties Donegal, Cavan, and Monaghan, which are in the Republic).Politically it is divided into the sovereign nation Ireland (political description, Republic of Ireland), a state that covers about five-sixths of the island (south, east, west and north-west), and Northern Ireland, which is under the forced and illegal occupation of the United Kingdom, covering the northeastern sixth of the island