Christianity was founded around 30 A.D., in Palestine. Christianity is monotheistic because we believe in a tripartite God. It has a holy book, it is called the Bible. Christianity has about 2 billion followers today, for every three people in the world one is christian. The central figure for this religion is God, who is also three people, father, son and holy spirit. about, 27.1 % of Americans are christian, 66.3% of Europeans are, 1.4% of Africa are, 4.5% of Asia-Pacific are and 0.7% of the Middle East North Africa are Christian.
Islam was founded around 632 AD by Muhammad in Mecca. It is polytheistic, they believe in a moon god, Allah and his three daughters. The religion has many holy books and some are called Twart, Zabur and Injil. it has over two billion followers, it has recently passed Christianity. the central figure of this religion is Allah.
Buddhism was founded in the fourth or fifth century B.C. in northern India. Buddhism is monotheistic. it does not have a holy book. Buddhism has about 200-500 million followers today. Buddha is the main figure in this religion. The largest number of Buddhists per capita is, appropriately, in Tibet.
Hinduism was founded between 1500-500 BCE in India. The exact date is unknown. It is a monotheistic religion. Hinduism does have a holy book but they are called holly texts. This religion has many gods and some are evil. There are about 900 million followers of the Hindu religion.