Why there are so many different denominations and different Churches in Chistianity?

Because Presbyterians don't agree with Evangelicals and Mormans don't agree with either also. So they have to congregate within what they agree with as Christians...

“Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye? How can you say to your brother, ‘Let me take the speck out of your eye,’ when all the time there is a plank in your own eye? You hypocrite! First take the plank out of your own eye, and then you will see clearly to remove the speck from your brother’s eye." Matthew 7:3-5

You have so many sects that their descriptions cannot all be listed here- LOL!!! Christian denominations are frequently different from each other by their 'housekeeping' rules, like how many elders a church should have, or whether communion should be taken every week or whether the pastor should teach through a whole book week after week or whether he should teach scriptures reflecting specific topics every week, or whether you only sing old hymns accompanied by an organ or sing contemporary Christian music with contemporary instruments. All believing Christians share belief in Jesus Christ for our Salvation.

1.Jarudiya/Followers of Abu'l-Jarud,

They believe Prophet (pbuh) designated Ali (ra) as the Imam by his characteristics but not by name.

2.Sulaimaniah / Jaririyah

Followers of Sulaiman ibn-Jarir al-Zaidi, They believed Imamat was a matter of conference and could be confirmed by two best Muslims.

3.Butriyah / Hurariyah

They did not dispute the Khilafat of Uthman, neither they attack him nor praise him.

4.Yaqubiyya

They accepted the Khilafat of Abu Bakr and Umar, but did not reject those who rejected these Khulafaa. They also believed that Muslim committers of Major sins will be in hell fire forever.

5.Hanafiyah

Followers of the Imammate of Muhammad ibn-al-Hanifah. They believe that Allah might have had a beginning.

6.Karibiyah

They believed that Imam Muhammad ibn-al-Hanifah is not dead and is the Imam Ghaib (in disappearance) and the expected Mahdi.

7.Kamiliyah

Followers of abu-Kamil. They believed companions to be heretic because they forsook their allegiance to Ali and condemn Ali for ceasing to fight them. They believed in the returning of the dead before the Day of Resurrection and that Satan is right in preferring fire to clay.

8.Muhammadiyyah / Mughairiyah

Followers of Muhammad ibn-'Abdullah ibn-al-Hassan. They do not believe that Imam Muhammad ibn-'Abdullah died and that he is Imam Ghaib and awaited Mahdi.

9.Baqiriyah

Followers of Muhammad ibn-'Ali al-Baqir. They believe him to be the Imam Ghaib and expected Mahdi.

10.Nadisiyah

They believe that those who consider themselves better than anyone else are Kafirs (disbelievers).

11.Sha'iyah

They believe that the one who has recited La Ilaha Il-Allah (There is none worthy of worship except Allah), whatever she or he does, will never be punished.

12.Ammaliyah

They believe that faith for one is what he/she sincerely practices.

13.Ismailiyah

They believe in the continuity of Imammate among the descendants of Ismail ibn-Ja'far.

14.Musawiyah / Mamturah

They believe Musa ibn-Ja'far to be the Imam Ghaib and expected Mahdi.

15.Mubarikiyah

They believe in the continuity of Imammate among the descendants of Muhammad ibn-Ismail ibn-Ja'far.

16.Kathiyah / Ithn 'Ashariya (the Twelvers)

They believe that expected Mahdi will be the twelveth Imam among the descendants of 'Ali ibn-abi-Talib.

17.Hashamiya / Taraqibiyah

They Predicate a body to Allah and also allege Prophet (pbuh) of disobedience to Allah.

18.Zarariyah

They believed that Allah did not live nor had any attributes till He created for Himself life and His attributes.

19.Younasiyah

Followers of Younas ibn-'Abd-al-Rahman al-Kummi. They believe that Allah is borne by bearers of His Throne, though He is stronger than they.

20.Shaitaniyah / Shireekiyah

They believed in the view that deeds of servants of Allah are substances; and a servant of Allah can really produce a substance.

21.Azraqiah

Followers of Nafi ibn-al-Azraq. They do not believe in the good dreams and vision and claim that all forms of revelation has ended.

22.Najadat

23.Sufriyah

24.Ajaridah

25.Khazimiyah

26.Shuaibiyah / Hujjatiyah

27.Khalafiyah

28.Ma'lumiyah / Majhuliyah

29.Saltiyah

30.Hamziyah

31.Tha'libiyah

32.Ma'badiyah

33.Akhnasiyah

34.Shaibaniyah / Mashbiyah

35.Rashidiyah

36.Mukarramiyah / Tehmiyah

37.Ibadiyah / Af'aliyah

38.Hafsiyah

39.Harithiya

40.Ashab Ta'ah

41.Shabibiyah / Salihiyah

42.Wasiliyah

43.'Amriyah

44.Hudhailiyah / Faniya

45.Nazzamiyah

46.Mu'ammariyah

47.Bashriyah

48.Hishamiyah

49.Murdariyah

50.Ja'friyah

51.Iskafiyah

52.Thamamiyah

53.Jahiziayh

54.Shahhamiyah / Sifatiyah

55.Khaiyatiyah / Makhluqiyah

56.Ka'biyah

57.Jubbaiyah

58.Bahshamiyah

59.Ibriyah.

60.Muhkamiyah

61.Qabariyya

62.Hujjatiya

63.Fikriyya

64.'Aliviyah / Ajariyah

65.Tanasikhiya

66.Raji'yah

67.Ahadiyah

68.Radeediyah

69.Satbiriyah

70.Lafziyah

71.Ashariyah

72.Bada'iyah

( 53 ) But the people divided their religion among them into sects - each faction, in what it has, rejoicing.

( 54 ) So leave them in their confusion for a time.

( 55 ) Do they think that what We extend to them of wealth and children

( 56 ) Is [because] We hasten for them good things? Rather, they do not perceive.

Quran (23:53-56)

That is because there are many versions of the Bible and also because people interpret it differently.

Muslims have sects as well for different views on the Quran and Sunnah, but fewer than Christians.

Because original NT was changed frequently and there as so many contradictions.

On the basic issue of status of Christ son of Mary, there are three beliefs:

He is son of God

He is God Almighty

He is a human.

No wonder there are more than 41,000 denominations which all call themselves

Christian. Christianity has become a joke, because its clerics tried to glorify a

human at the cost of God Almighty.

Because the United States stopped letting one sect kill another sect for not worshiping the same exact way.

The moment you take away the ability of those currently in power to kill those who disagree with them, you take away their power to maintain their monopoly.

If the Islamic world is ever free, you'll see the same proliferation of sects, as every tin pot iman seeks to carve out his own flock of suckers to support his habits.

Same reason there are different sects of Islam. People disagree.

Because the disicples had their own beliefes in the systema and everything got scrambled around.

Because everyone wants to choose their own Bible, literally translate and print their own version of the scriptures.

Why don't you ask an easy question such as "Why is the speed of light constant?"