<P> Czech reformer and university professor Jan Hus (c. 1369--1415) became the best - known representative of the Bohemian Reformation and one of the forerunners of the Protestant Reformation . </P> <P> Jan Hus was declared heretic and executed--burned at stake--at the Council of Constance in 1415 where he arrived voluntarily to defend his teachings . </P> <P> This predominantly religious movement was propelled by social issues and strengthened Czech national awareness . In 1417, two years after the execution of Jan Hus, the Czech reformation quickly became the chief force in the country . </P> <P> Hussites made up the vast majority of the population, forcing the Council of Basel to recognize in 1437 a system of two "religions" for the first time signing the Compacts of Basel for the kingdom (Catholic and Czech Ultraquism, a Hussite movement). Bohemia later also elected two Protestant kings (George of Poděbrady). </P>

Why did the catholic and protestant church split