Nigerien women dig a trench to collect rainwater near the village of Tibiri, in Niger's southern Zinder region.
From the guardian.co.uk
Nigerien society reflects a great diversity drawn from the long independent histories of its several ethnic groups and regions and their relatively short period living in a single state.
From the en.wikipedia.org
Nigerien culture is marked by variation, evidence of the cultural crossroads which French colonialism formed into a unified state from the beginning of the 20th century.
From the en.wikipedia.org
More examples
Nigerian: of or relating to the people of Nigeria; "a Nigerian novelist won the Nobel Prize for literature this year"
A native or inhabitant of Niger
Niger (or), officially named the Republic of Niger, is a landlocked country in Western Africa, named after the Niger River. It borders Nigeria and Benin to the south, Burkina Faso and Mali to the west, Algeria and Libya to the north and Chad to the east. ...
A person from Niger or of Nigerien descent; Of, from, or pertaining to Niger or the Nigerien people