Ottoman (1517-1924) - Historians generally cite the beginning of the Ottoman Caliphate as 1517 CE when the Ottoman Empire took control of Cairo, Egypt. The Ottomans continued to maintain their claim as the Islamic Caliphate until 1924 when the Caliphate was abolished by Mustafa Ataturk, the first President of Turkey.
The main significance of the War Powers Act was that "It prevented Congress from withholding funding <span>for a war," since it gave FDR the ability to completely rearrange the executive branch. </span>