By 1560, what two main branches of christianity existed in western europe?

Catholic and Protestant.

Explanation:

Christianity is one of the dominating and largest religions of the European nations even from ancient times. Europe had been practicing this religion since the first century, with even a number of the letters that Paul wrote in the New Testament being addressed to the countries of Europe.

Though primarily Catholicism had been the norm, Protestant sect began to increase during the 16th century. With the emergence of Martin Luther King and his Protestant Reformation, the different branch of Christianity grew in Europe. Especially in Western Europe, where there are majority Catholic groups, Protestantism also began to slowly emerge and become more prominent by the 1560s.