Simplify the following text for a Grade 16 native English-speaking person.
Original: The Norwegian Refugee Council ( NRC , ) is an independent , humanitarian non-governmental organization which provides assistance , protection and durable solutions to refugees , internally displaced persons , and returnees worldwide .
Simplified: The Norwegian Refugee Council ( NRC ) ( Norwegian : Flyktninghjelpen ) is an independent , non-governmental organization in Norway which helps refugees and internally displaced persons around the world .