Movement, Region, Human-Environment Interaction, Location, Place.
Also a mnemonic that I learned today was MR HELP (weird i know) but yeah.
A major difference between the ottoman and byzantine empire during this time was mostly like the fact that they had fundamentally different religions so the correct answer is each empire practiced a different religious faith have a nice day
Answer: Your answer is D! How does the source compare to other sources!
He improved business and trade