a sovereign ruler of great power and rank, especially one ruling an empire.
Because economy within a certain region will be heavily depended on what resources that are available in that region.
Since the Arabian Pennisula do not possess a good climate to produce agricultural products, it's almost impossible for agricultural sector to flourish in this region, and therefore they focused their economy on things such as oil, silk, zaitun, etc.
Although, 1. He was the first president he had to set the example. 2. He was also a famous general, and had to make sure to keep everything straight.
The Medici family ruled the city of Florence throughout the Renaissance. They had a major influence on the growth of the Italian Renaissance through their patronage of the arts and humanism. The Medici family were wool merchants and bankers. Both businesses were very profitable and the family became extremely wealthy.
