20th century research and practice of science led to advancement in the fields of communication, engineering, travel, medicine, and war. 20th century The 20th (twentieth) century was a century that began on January 1, 1901 and ended on December 31, 2000. It was the tenth and final century of the 2nd millennium. It is distinct from the century known as the 1900s which began on January 1, 1900 and ended on December 31, 1999. The 20th century was dominated by a chain of events that heralded significant changes in world history as to redefine the era: flu pandemic, World War I and
Christianity in the 20th century return of Jesus Christ. The movement divided over these and other factors over time into those now known as Fundamentalists, retaining its name, and those known as Evangelicals, retaining its original concerns. In the early 20th century when the Anglo-Catholic Movement was at its height, the Anglican Communion had hundreds of orders and communities. However, since the 1960s there has been a sharp falling off in the numbers of religious in many parts of the Anglican Communion, most notably in the United Kingdom and the United States. Many once large and international communities have been reduced to a single convent