The crusades, a series of European holy wars waged from the 11th to the 13th century, had an enormous impact on the European economy. The long term effects of the crusades included the establishment ...
The Republic of Ireland is telephone country code +353. Roscommon  is in Ireland's telephone area code 090, which becomes +353 90 in  international format.
For Belfast, +44 28 from outside the UK or 028 from inside. (Belfast is in Northern Ireland which is part of the United Kingdom and thus uses the UK's country code +44.) For the Republic of Ireland, +353. (The + means whatever your international code is.