Liturgical Latinisation, also known as Latinisation, is the process by which liturgical and other aspects of the churches of Eastern Christianity (particularly the Eastern Catholic churches) were altered to resemble more closely the practices of the Latin Church of the Catholic Church. This process particularly occurred in the 18th and 19th centuries, until it was forbidden by Pope Leo XIII in 1894 with his encyclical Orientalium dignitas. Latinisation is a contentious issue in many churches and has been considered responsible for various schisms.