The same as most of Europe: Christianity.
Islam
Most people in the middle east practice islam
Most Taiwanese practice a combination of Buddhism, Confucianism and Taoism.
Judaism (75%).
Christianity, I guess
Islam
Christianity, which is the majority religion in all of South America.
The second major religion in France is Islam. Between that and the main religion of Christianity is a significant number of people who have no religion.
Roman Catholic
Most people in the US who profess any religion profess to be Christians. There are many denominations of Christianity in the US.
Most people in the Middle East today practice Islam.