The period preceding, and contemporary with, the Protestant Reformation saw the translation of the Bible into local European languages—a development that contributed to Western Christianity's split into Roman Catholicism and Protestantism due to disparities between Catholic and Protestant versions of crucial words and passages (although the Protestant movement was largely based on other things, such as a perceived need for reformation of the Roman Catholic Church to eliminate corruption). Disparities between versions of crucial words and passages in versions of the bible contributed to what split