All the Omayyad princes were invited to the wedding, Merwan hoping still to conciliate them.
By a trick ‛Ali was deposed , and the Omayyad dynasty was established with its capital at Damascus.
It now became the capital of a jund, or military district, which under the Omayyad Caliphs extended from Palmyra to the sea.
The ruin of the Omayyad empire and the rise of the new dynasty did not take place without mighty convulsions.
One other short-lived movement of the Omayyad period should be mentioned.
From this point onward the glory of the Omayyad line decays.
For a time, after the death of Ali, the Omayyad family was in the ascendant, and for nearly a century they gave rulers to Islam.
In 749 they accomplished a carefully prepared revolution, and the last of the Omayyad Caliphs was hunted down and slain in Egypt.
So the grievances of Ali were avenged at last, and the Omayyad line passed out of history.
The constructive genius in this was Moawiya, the first Omayyad caliph.