:salam2:
In past, few threads were opened why religion of Islam or the last Prophet Muhammad 
were sent (started from) to arab (country) and why not to China, Japan or any other country. Beside giving geographically reason why Islam chosen for arab (country). As a Muslim we believe that Almighty Allah sent One Lac Twenty-Four Thousand apostles to every nations. The Holy Qur’an only mentiond 25 apostles (I think) and rest were mentioned in the Book Qur’an.
I believe that in every nation either it could be China, Japan, India, Pakistan or any other country, a messenger were sent for guidance and the Arab country is chosen bcoz here in the Macca, the first house of Almighty Allah (Kaaba) was built. I came across few verses of Holy Qur’an and would like to share with u all.
Almighty Allah said: “And those who disbelieved say, “Why has a sign not been sent down to him from his Lord?” You are only a warner, and for every people is a guide” [13:7]
The last sentence of this verse has usually been interpreted to mean that the Apostle’s function was merely to warn, and that guidace was sent by Lord to every nation through its apostles. So it is itself is a Sign that Prophet Muhammad should warn and preach and produce the Quran and the guidance which he brings is universal guidance, as from Lord’.
Almighty Allah said: "We did aforetime send messengers before thee: of them there are some whose story We have related to thee, and some whose story We have not related to thee. It was not (possible) for any messenger to bring a sign except by the leave of Allah: but when the Command of Allah issued, the matter was decided in truth and justice, and there perished, there and then those who stood on Falsehoods" **[40:78]
**
The Signs of Lord are everywhere, and can be seen by the discerning eye at all times. But if any extraordinary Signs are demanded by cynics or Unbelievers, they will not be granted merely because they are demanded. It is God’s Will that issues them, not merely the desire of human beings, even if he be a Messenger of God. But when and extraordinary Sign does issue by the Command of God, it means that the cup of the iniqutous is full; that their case is decided, and their time respite is past; and the Justice take the place of Mercy, and evil is blotted out. The apostles were send to all nations aforetime as mentioned in Surah Al-Nisa, stories of some apostles were revealed and stories of some other apostle were not revealed in the Holy Qur’an. So peoples from different beliefs must try to understand the message from theirs scriptures books and see the similarities between their religion and Islam.
There are many verses in Qur’an related to above i.e. 14:52, 33:40, 2:185, 35:24 and more, but I’ll conclude here by quoting one more verse where Almighty Allah said: “And We have not sent you, [O Muhammad], except as a mercy to the worlds.” **[21:107]
**
In this verse there is no question now of race or nation, of a “chosen people (nation)” or the “seed of Abraham” or the “seed of David”; or of Hindu Arya-varta, or Jew of Gentile, Arab of 'Ajam (Persian), Turk or Tajik, european or asiatic, White or Coloured; Aryan Semitic, Mongolian, or African; or American, Australian, or Polynesian. To all men and creatures other than men who have any spiritual responsibility, the principles universally apply.
For every people (nation) a guider (apostle) were sent but that apostle was sent only for that peoples (nation) for only that particular time (period). But the Prophet Muhammad is not only sent for for all mankind not for arab only, as a mercy to the worlds.