 Complete the following phrase:  The Kingdom of Afghanistan , Dǝ Afġānistān wākmanān; , Pādešāhī-ye Afġānistān was a constitutional monarchy in Southern and Central Asia established in 1926 as a successor state to the Emirate of Afghanistan. It was proclaimed by its first king, Amanullah Khan, seven years after his accession to the throne. The monarchy ended in the 