The Roman Empire fell around the 5th century, and as Islam spread in the 7th century, trade between Europe and China slowed. Chinese traders were blocked from westward expansion into Europe when the Chinese army was defeated by Muslim fighters in the area known as Syr Darya. The trade routes, known as the Silk Road, fell into disuse, and trade between the Far East and Europe nearly stopped. It wasn't until the 13th century when the Mongols invaded and controlled central Asia and large parts of the Middle East that extensive trade along these routes was opened again

i am pretty sure the awsers is d.

the correct answers are the following

a proxy war which functioned as a training field for wwii

republican democratic goverment

national side, leaded by the fascist general franco

the spanish civil war took place between 1936 and 1939 and was fought after a military coup undertaken on the 17th july 1936 by a group of generals that had seceeded from the spanish republican army, under the leadership of general franco, and who aimed to expel the democractically-elected republican goverment from power.

this war became a proxy war in which european powers tested their military equipment. on one side, urss and mexico supported the left-wing republican spanish goverment, while nazi germany and fascist italy supported the national fascist side.

franco managed to win the war in 1939, with the significant contribution of the foreign military support, and became the dictator of spain until his death in 1975.

explanation:

mark brainliest and have a great day!

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.