USA HISTORY

Detailed explanation-1: -The exchange introduced a wide range of new calorically rich staple crops to the Old World-namely potatoes, sweet potatoes, maize, and cassava. The primary benefit of the New World staples was that they could be grown in Old World climates that were unsuitable for the cultivation of Old World staples.

Detailed explanation-2: -Christopher Columbus introduced horses, sugar plants, and disease to the New World, while facilitating the introduction of New World commodities like sugar, tobacco, chocolate, and potatoes to the Old World.

Detailed explanation-3: -Falciparum malaria, by far the most severe variant of that plasmodial infection, and yellow fever also crossed the Atlantic from Africa to the Americas. Columbian Exchange: New World or Old World? In the centuries after 1492, these infections swirled as epidemics among Native American populations.

Detailed explanation-4: -Raw materials like precious metals (gold and silver), tobacco, sugar and cotton went from the Americas to Europe. Manufactured goods like cloth and metal items went to Africa and the Americas. Finally, slaves went from Africa to the Americas to work. This trade created great profits for Europe.

Detailed explanation-5: -New diseases were introduced to American populations that had no prior experience of them. The results were devastating. These populations also were introduced to new weeds and pests, livestock, and pets. New food and fiber crops were introduced to Eurasia and Africa, improving diets and fomenting trade there.