"We shall show them Our signs on the horizons and within themselves until it will become clear to them that it is the Truth. Does it not suffice that your Lord is Witness over all things?"
Qur'an:41:53.
Muslims are taught that throughout the ages, Allah Almighty has sent a prophet to every nation as a warner and a bearer of glad tidings.
"Verily! We have sent you (O Muhammad) with the Truth, a bearer of glad tidings and a warner; and there is not a nation but a warner has passed among them."
Qur'an 35:24.
Each Prophet was wisely selected by Allah in order to be the best person for the job. He was then provided by Allah with miracles as proof of his truthfulness and his message. These miracles were wisely selected by Allah in order to be in the same field as that which these people excelled in so that they could fully comprehend the magnitude of these miracles.
For instance, the people during the time of Moses excelled at magical trickery. Their rulers used to surround themselves with the most powerful of these wizards as a sign of power. This is why Allah made the miracles of Moses (as) similar to their magical trickery (changing a stick into a snake, parting of the sea... etc.) but of a much greater magnitude than anything they could ever hope to accomplish. For they were not tricks, but actual physical miracles.
The people at the time of the Prophet Jesus (as) excelled in matters of medicine. For this reason, his miracles were of a medical nature (raising of the dead, healing of the blind...etc.), but of a degree that they could never hope to imitate. Similarly, one of the major miracles of Islam was a new and unheard-of type of literature similar to the Bedouin's poetry but far beyond anything they could ever hope to match. Although they did indeed try. This new literature was called "The Qur'an."