Muhammad was not sent only to Arab, but to the Worlds, to all mankind

Muhammad was not sent only to Arab, but to the Worlds, to all mankind =>

And Muhammad is the way of Truth and Straight Path :

Isn't that Truth is the way and the way to Allah ???? Yes sure.

We have certainly sent down distinct verses. And Allah guides whom He wills to a straight path. (QS 24:46).

Say, [O Muhammad], "O mankind, indeed I am the Messenger of Allah to you all, [from Him] to whom belongs the dominion of the heavens and the earth. There is no deity except Him; He gives life and causes death." So believe in Allah and His Messenger, the unlettered prophet, who believes in Allah and His words, and follow him that you may be guided. (QS 7:158).

Indeed, We have sent you, [O Muhammad], with the truth as a bringer of good tidings and a warner, and you will not be asked about the companions of Hellfire. (QS 2:119).

Look how they strike for you (Muhammad) comparisons; but they have strayed, so they cannot [find] a way. (QS 17:48)

And We have revealed to you, [O Muhammad], the Book in truth, confirming that which preceded it of the Scripture and as a criterion over it. So judge between them by what Allah has revealed and do not follow their inclinations away from what has come to you of the truth. To each of you We prescribed a law and a method. Had Allah willed, He would have made you one nation [united in religion], but [He intended] to test you in what He has given you; so race to [all that is] good. To Allah is your return all together, and He will [then] inform you concerning that over which you used to differ. (QS 5:48).

Muhammad (pbuh) was sent as a Mercy to the Worlds => And We have not sent you, [O Muhammad], except as a mercy to the worlds. (QS Al-'Anbyā' (The Prophets) - [21]:107).