Complex sentence: The national park was established according to the Decision number 90/2002/QĐ-TTg dated 12 July 2006 by the government of Vietnam, this decision turned the Nature Reserve into National Park.
Split into simpler sentences: The national park was established according to the Decision number 90/2002/QĐ-TTg dated 12 July 2006 by the government of Vietnam. This decision turned the Nature Reserve into National Park.