Which empire eventually included arabia mesopotamia persia north africa and parts of spain?

The Abbasid caliphate (750-1258), also called abbasid caliphate, was a Caliph dynasty founded in 750 by Abu l-Abbas, descendant of Abbas, uncle of Muhammad, who took power after eliminating the Umayyad dynasty and moved the capital of Damascus to Baghdad, Baghdad became one of the main centers of world civilization during the caliphate of Haroun al-Rashid, character of the Arabian Nights.

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27