the answer is the A the han dynasty
Answer: Because the Muslim world was the center of philosophy, science, mathematics and other fields for most of the medieval period, many Arabic ideas and concepts were spread across Europe, and trade and travel through the region made understanding Arabic an essential skill for merchants and travelers alike.
Explanation:
I believe the answer is D. Agricultural. Because the meaning is to grow things
The Himalayas and The Huang He River.
I believe it's A.
The Muslims did control Jerusalem for a time, and I believe that they forced the Christians out of it.
Also the Crusaders did sack Constantinople when they were not allowed in by the government there.
I don't know what D is but I'll assume that it is true because I think A is false.