I believe it is Partisan. Is this one of your options? :)
Yes, technically it is true that the Byzantine emperor, who believed that Muslims posed a threat to Christian Constantinople, requested help from Europe, although he mostly dealt with them himself.
It's C. Couldn't be a. b is from a different time period. d is a different story.
The economic advantages of the physical geography of the U.S. is the easy access to water/water ways, as well as the wide arrange of environments.
The U.S. gained island ports that were stopping points between trading routes. <span />
