Simplify the following text for a Grade 10 native English-speaking person.
Original: In his vain and racistic effors to oppose and derail KaradÅ 3\/4 iÄ 's work , he was loner and loser - mainstream of the Croatian educated men , headed by Strossmayer and Gaj , highly appreciated and supported KaradÅ 3\/4 iÄ .
Simplified: This was not a popular or widely accepted theory ; educated people headed by Strossmayer and Gaj supported KaradÅ 3\/4 iÄ .