Answer:
The Columbian Exchange was a period of cultural and biological exchanges between the Americas and the Old World (Europe, Africa, and Asia) that took place following the voyage of Christopher Columbus in 1492. One of the major effects of the Columbian Exchange was the introduction of new plants, animals, and diseases to the Americas and the Old World.
The group that gained domestic animals from the Columbian Exchange was the Europeans. The Columbian Exchange brought new animals, such as horses, cattle, pigs, and chickens, to the Americas from Europe. These animals were essential for the development of agriculture and transportation in the Americas. Native Americans, on the other hand, did not gain domestic animals from the Columbian Exchange.