Explain the changes and continuities of the Islamic empires starting from the Umayyad to the Abbasid empires. PLEASE HEL I NEED A ESSAY! I WILL GIVE EXTRA POINT FOR GOOD ANSWERS!

By moving the capital to Baghdad in 762 CE, the Abbasids overthrew the Umayyad dynasty in 750 CE, supporting the Mawali, or non-Arab Muslims. As the Abbasids formed the new offices of Vizier and Emir to delegate their central authority, the Persian bureaucracy slowly replaced the old Arab aristocracy.

Explanation:

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a.

explanation:

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.