That reminds me of the George W Bush speech explaining that if other countries were not with them at war then they would be seen against them.<quoted text>
You are right, prophet dictated the letter and his scribes wrote it down on scroll....and then prophet sealed the scroll with his ring and it was dispatched thru individual persons, one for each addressee.
Every letter reached to its destination, however one of its bearer was killed on the route and prophet avenged for his murder by sending a Muslim army to punish the criminal.
It was a momentous event in the history of world religion, a prophet of God inviting kings and rulers of all near by countries to "accept Islam and be safe".
And within 25 years of these letters being dispatched, each and every country was under the feet of Muslims!!
Only those who "accepted the message of peace, were able to save their power and kingdom"!!
This is world history, not a cooked up tale!!
They were given camels and provisions for the journey.
Look at all the countries that joined in for their own safety ?
Could these countries you speak of who haved joined Islam for mercantile gain seeing it offered them a new taxation system ?
When the messenger was killed,how was it possible to know who did it ?