Why did trade flourish under the mongols

6. how did trade with the venetians contribute to the fall of the byzantine empire?

What happened as agriculture became entrenched in the south ?

What was the main cause of the russian revolution? a. the protests against the war with poland b. the tremendous war losses of world war 1 c. the protests against the treaty of brest- litovsk d. the losses dictated by the treaty of versailles