Simplify the following text for a Grade 4 native English-speaking person.
Original: These include the Niger Delta Development Commission ( NDDC ) , a government initiative , and the Development Initiative ( DEVIN ) , a community development non-governmental organization ( NGO ) based in Port Harcourt in the Niger Delta . Uz and Uz Transnational , a company with strong commitment to the Niger Delta , has introduced ways of developing the poor in the Niger Delta , especially in Rivers State .
Simplified: The Niger Delta is the delta of the Niger River .