The correct answer for this question is "Tomatoes and pumpkins." The <span>foods that were first introduced to the Americas by Europeans through the Columbian Exchange are the t</span><span>omatoes and pumpkins. They are considered food that are very useful and essential.</span>
The Silk Road passed through Central Asia, linking China in the east to Iran and Fergana branch, led from Samarkand via Hodjent to Isfara, Kokand and Osh.
The U-2 incident was over a US CIA spy plane flying over the Soviet Union and taking photos of military installations and it was shot down by a missile from the Soviet Union so it caused a serious rift in relations between the two superpowers.