Christianity
With an estimated number of Christians being somewhere around 2.2 billion, split into around 34,000 different denominations, Christianity is the world's largest religion. The Christian share of the world's population has been around 33% for the last hundred years. This has caused Christianity to spread throughout the world, mainly in Europe and North America. It is still the main religion of Europe, the Americas, the Philippines, and Southern Africa. However it is becoming smaller in some areas, some of them are; Oceania (Australia and New Zealand), Northern Europe (with Great Britain, Scandinavia and other places), France, Germany, the Canadian provinces of Ontario, British Columbia, and Quebec, the Western and Northern parts of the United States, and parts of Asia (especially the Middle East, South Korea, Taiwan and Macau).