Your answer is D the stock market crash.
Both sides of the trade became very wealthy as much trade does but slaves were being transferred which is obviously bad other than that the only things being transferred were materials and non native foods. hope this helps!
Under Kublai Khan the Mongol empire reached its largest extension. He ruled over 24000000 km² (nearly 10000000 mi²). The empire went from China and Korea to Iran and southern Russia, from the Korean peninsula to the Danube River.
During Kublai's reign the empire was divided into four smaller Kanatos but he still remained as the Great Khan of all of them. He was actually the first Khan to successfully conquest China in 1279, making him the first Yuan ruler of the whole China. After his death, the mongols didn't elect a new Khan and the Kanatos became more independent.
The main motive for the French wanting to establish colonies around the world was to compete with the British and the Dutch, who were extracting great amounts of resources from new territory.