It would be A. Examples of civilizations in the Arabian Peninsula hope his helps
He is a part of Trump's cabinet members.
He wanted to free slaves on the precedent that all men are created equal.
<h3> He tried to increase us oil production.
As a result of a revolution in Iran during 1978 and 1979, the cartel of countries controlling part of the oil market decided to stop production.</h3>
The Mali Empire collapsed in the 1460s CE following civil wars, the opening up of trade routes elsewhere, and the rise of the neighbouring Songhai Empire, but it did continue to control a small part of the western empire into the 17th century
(Hope this helps)