The countries surrounding the Persian Gulf are the richest in oil supplies. This oil wealth in the Middle East is the main driving force of their economy.
Trade was the motivating factor. The silk road accross Asia was besieged by bandits & required bribes to a number of nations to transport goods to & from Asia. Therefore a sea route would be a much safer & less expensive means of getting trade goods to & from Asia.
Is when a political candidate chooses a running mate, usually of the same party, with the goal of bringing more widespread appeal to the campaign.