Simplify the following text for a Grade 9 native English-speaking person.
Original: His opposition to the Vuk 's work he ` supported ' by utter denial of the Serbs as the nation , their language , their culture and history .
Simplified: His opposition to KaradÅ 3\/4 iÄ 's work was based in utter denial of the Serbs as the nation , their language , their culture and history .