One of the ways that Brexit negotiations are breaking down is over Ireland. Yet much of the discussion ignores both imperialist history and the consequences for working people.
At first glance the shape of the border between Northern Ireland and the rest of the country makes no sense. It is a squiggly line stretching 310 miles from Lough Foyle in the north west to Carlingford in the east. It follows no natural boundaries and cuts across 180 roads. Donegal is indisputably in the north of Ireland, but not part of Northern Ireland. Neither was the border based on the division of Ireland into four historical provinces with Ulster as the northern one. Three counties of Ulster — Monaghan, Cavan and Donegal — were excluded from the newly created statelet.