Réponse:
Helloo!
1) The Northern Ireland official flag of the UK, and it is called : Saint Patrick's Saltire
2) The official languages are : Irish and English
3) The currency (money) is the : Livre Sterling
4) The form of government is : Constitutional Monarchy and Consociationalism
5) The head of the government is : Arlene Isabel Foster
6) The largest river or lake is : Lough Neagh (lake)
7) National symbols (or plant) are : the shamrock and the red hand
8) The Irish national holiday is : Saint Patrick's day
Voilà! J'espère que ça t'a aidé hihii^^!