Upgrades/Swords of the Prophets/Religion

==Technological restrictions==
===1. Indian===
*Highest Medicine, Attrition upgrades possible.
*No access to Level 3 
===2. Roman===
===3. Persian, Muslim===
===4. Chinese, Asian===
===5. Barbarian: German, Norse===
(Saxons, Norse, Britons, VArangians, Poles)
*Mostly basic-level upgrades only.
===6. Turkic===
*Worst level of upg