Tigray Province
Tigray (, ) is a historical region and province of Ethiopia. It encompasses most of the territories of Tigrinya-speakers (and a few minority groups closely linked with them) in Ethiopia; Tigray is separated from the northern Tigrinya territories by the River Mereb, now serving as the state border to Eritrea.
Tillabéri Region
The region of Tillabéri is bounded to the north by the Republic of Mali, to the east by the regions of Tahoua and Dosso, to the south by Benin and to the west by Burkina Faso. The Niamey Capital District built around the Niger River. The region has a large network of watershed, centered on the Niger river with several seasonal (known as Gorouol, Sirba) and permanent (known as Mékrou, Tapoa) watercourses. The W National Park of Niger is located in the extreme south of the region and extends to Burkina Faso and Benin. The northwestern part of the region (Ouallam and Filingué) have a savannah type flora and fauna.