Christianity in the 20th century The Evangelical push of the 1940s and 1950s produced a movement that continues to have wide influence. In the southern United States, the Evangelicals, represented by leaders such as Billy Graham, have experienced a notable surge. Australia has seen renewal in different parts of her Anglican Church, as well as a growing presence of an Evangelical community. Although more "traditional" in its Anglican roots, the nation has seen growth in its religious sector. The Third Great Awakening had its roots in the Holiness movement which had developed in the late 19th century. The Pentecostal revival movement began out of a
Death rates in the 20th century the 20th century. A natural population increase occurs when birth rates are higher than death rates. Recently and most notably, the years immediately after World War II saw an explosion in fertility rates called the Baby Boom because the returning soldiers and displaced people started new families. Death rates were significantly lower during the baby boom and thus populations increased substantially. Today these baby boomers are approaching old age and driving up the average age of the overall population. The World Bank predicts a dramatic decrease in population size from the increase in death rates over the next decade or