The US certainly has many more who claim Christianity, at around 235 million. China has a reported 60 million who are under a repressive regime and are Christians under persecution. A faith refined by fire would certainly be genuine, although the figure is unofficial. Nigeria has a reported 58 million Christians, who also suffer due to Islam.
This country's population is estimated to be more than ten million people, and about 80% of them are Christians.
Russia, which has more than 100 million Orthodox Christians.
Nigeria has about 80 million Christians, but that's only 50% of the population. Equatorial Guinea, on the other hand, has about 683,000 Christians, representing more than 98% of the population.
China probably has more Christians than any other country, because there are an estimated 70 million Christians in China, but that is in a country with a population of over 1 billion people, so it might not be the country with the largest PERCENTAGE of Christians. Many Christians are in Europe and North America, but I don't know the exact number.
India
In gross numbers it would be the US with about 190 million Christians followed by Brazil with 170 million and then Mexico with 96.5 million. By percentage it would be Vatican City at 100 percent.
Every country has Christians. They range from Pitcairn Islands with 50 to United States with 227 million. But some countries have low percentages of Christians. Somalia, Afghanistan, Turkey, Tunisia and Yemen have less than 0.25% of there country as Christians.
Yes. 5.2 million each year.
That country would have to be Brazil - the largest country on the continent.
France is the most visited country in the world by far, totaling about 77 million tourists annually (which is 17 million more than the next country, the United States [60 million]).
Indonesia (more than 200 million Muslims)
Indonesia with more than 200 million Muslims.