Simplify the following text for a Grade 10 native English-speaking person.
Original: In May 2006 , the United Nations Mission in Liberia ( UNMIL ) released a report detailing the state of human rights on Liberia 's rubber plantations .
Simplified: In May 2006 , the United Nations Mission in Liberia ( UNMIL ) released a report on the state of human rights on Liberia 's rubber plantations .