Barack Obama is the 51st president since the Articles of Confederation and the 44th under the Constitution. The earliest the 51st president under the Constitution will be known is 2036
I think it is the answer B
<span>Emir is the title given to a Muslim leader that is often a prince of a tribal chief. This title is commonly used in Arab countries and Afghanistan which could also mean commander or general. If the leader is a female, the title is changed into Emira. </span>
