'Civilization V' strategy: Harun al-Rashid's ships of the desert spread Arabian faith far and wide

Continuing my series of strategy posts about Brave New World's modified civilizations, I'm going to take a look at strategies for Arabia. Arabia received a modest revision in Brave New World out of the box, having its national trait moderately redesigned. The old city connection economic focus has been regeared towards Brave New World's new trade route mechanic, and a religious buff was also added to make this civ more compelling for Gods & Kings mechanics.

The majority of the Arabian peninsula is harsh desert, and so massive human settlement did not begin until the rise of the Islamic empires of the middle ages. In the early seventh century, the Prophet Muhammad began preaching the tenets of Islam in Mecca and Medina, which united several Arabian tribes and led to the establishment of the Caliphate, an Islamic empire that began to extend its influence across the peninsula and beyond. In the mid seventh century, the Caliphate began conquering territory from the Byzantine empire and they completely destroyed the once-powerful Persian empire that had dominated the region since antiquity. At its height, the Caliphate extended from Portugal, Spain, and Morocco in the west, all the way to the borders of India in the east. Arabia's position as a crossroads between west and east made it a center for powerful trading hubs, and Arabian engineers and scientists developed advanced new mathematical concepts. Goods, knowledge, and religious beliefs from both ends of the known world (and beyond) often passed through Arabian trading bazaars, and much of the knowledge of the classical Greeks and Romans were preserved by Islamic scholars, eventually contributing to the European Renaissance centuries later.

Harun al-Rashid ruled during the mid eighth century during the Caliphate's golden age. He has been strongly romanticized by Arabian authors and scholars, and has even been mythologized in tales included in the Book of One Thousand and One Nights. He was known as a sharp political, intellectual, and military mind, but it is difficult to separate factual accounts from fictitious ones. Even his exact birth date is debatable. He was Caliph during one of the greatest periods of expansion of the early caliphates, but he also almost destroyed the Caliphate by dividing the empire among his sons instead of naming a single heir. This led to prolonged civil war between the sons, but the Caliphate did survive the turmoil.