When did christian denomination begin?

Answer 1

Christianity?

To get a specific date, you may have to ask a more specific question? When did it begin for whom? What do you mean by Christianity?

If Christianity means to follow the teachings of Christ and, to emulate his life style, then it began for his disciples on the day when Jesus called them, and they dropped their fishing nets, and they walked away from their belongings and their families to follow him. It would be hard to find any earlier example than that.

If, on the other hand, you are asking about when was Christianity established as a recognized religion, then the answer is going to depend on what you mean by "established", what you mean by "recognized", what you mean by "religion." There probably are as many different answers as there are scholars who are qualified to tackle the question.

Answer 2

Christianity began with the life of Jesus Christ, which was about 2000 years ago. The formation of different denominations began within a few centuries of that time.

Answer 3

There are numerous Christian denominations. The oldest 2 are Catholicism & Orthodoxy.