What do potatoes, corn, and gold have in common?

Question 3 options:

Native Americans transported them to the Old World

They all made countries of the Old World richer

Europeans introduced all of them to the New World

They were all discovered by Columbus

Might be option 2, not sure though

They all made countries of the Old World richer

Explanation:

Potatoes, corn, and gold, among other resources, were riches taken from the Americas used in benefit of European powers. The riches of the Americas allowed all of Europe to grow, not just Spain and Portugal. The Conquest led to the importation of new agricultural products in Europe such as tomatoes, corn, potatoes or cocoa, products that also had a great impact on the economy and the European habits of other continents. Likewise, the arrival of the agricultural varieties and livestock diversities of Europe, Africa, and Asia produced a change in the productive and food landscape of the American continent. The introduction of American minerals greatly boosted the European economy but at the same time, it created high inflation situations. In later centuries, gold and silver played an important role in the birth of capitalism, mainly in the Netherlands, Britain, and France. The Conquest of America was an almost permanent process, as some indigenous societies opposed constant resistance while others were never fully assimilated.