What are some ways in which christianity is practiced differently in different parts of the world

The Christian religion has great branches that differ in doctrine and form of worship.

In European countries such as Spain, Portugal, Italy, France, Austria, Belgium, Southern Ireland, etc. and its former colonies, such as the current countries of Latin America (Mexico, Brazil, Argentina, Peru, etc.), some countries in Africa (Congo, Angola, Nigeria, Uganda, Kenya, Tanzania, etc.) predominate the Roman Catholic Church, whose organizational structure is based in the Vatican City, and subject to the authority of the Supreme Pontiff or Pope.

In Eastern European countries such as Greece, Russia, Serbia, Bulgaria, etc. the Orthodox Catholic Church predominates. The creed is similar to the Roman Catholic but does not respond to the Pope of Rome and his organization is more decentralized.

In northern European countries such as Great Britain, northern Germany, Holland, Scandinavian countries, and respective ex-colonies (South Africa, Australia, the United States, etc.) predominate various branches of Christianity called Protestants. Among them are the Anglican Church with its headquarters in England, the Evangelical Churches (Lutherans, Baptists, Pre-Baptists, Methodists, Pentecostals, Free Assemblies, etc.), the  Adventist Church, the Mormon Church, the Jehovah's Witnesses, etc.

In all cases the different practices of Christianity are based on the mother doctrines of each branch but also have a component of the original cultures of each place.

For example, in Mexico, the day of the dead is celebrated as an ancient practice from the Aztecs; in Ireland and then in the United States Halloween is celebrated on the basis of Celtic practices prior to Christianity; in Brazil rites based on Afro customs are celebrated; in the Evangelical Pentecostal Churches the cults are very animated and give preponderance to personal contact based on the Latin American idiosyncrasy; in the African Churches vocal songs and instrumental rhythmic predominates as a consequence of the characteristics of their original population.

Christianity is practised differently all over the world. It is divided into three branches, each of them with different practices. The branches are: Protestantism, Orthodoxy and Roman Catholicism. An example of the difference between them is the way the see Saint. For Orthodoxy and Catholic churches saints are holy people who are venerated and mediate btween God and people. Protestants believe that all christians are saints and that the only one that can mediante between God and people is Jesus.