Answer:
Facts that prove the college board statement above true for europeans: The existence of agricultural products that are not native to Europe and the existence of colonies present today in the American continent, such as French Guiana for example.
Things that changed for Europeans because of their contract with the Americans: The Colombian exchange program provided great food stability in Europe, the establishment of large shopping centers with products collected from the colonies, such as the redwood trade found in Portugal.
Explanation:
The Colombian Exchange refers to the exchange of products and people between European and American individuals. This was because when Cristovão Colombo discovered the American continent, it allowed the exploitation of all the resources of that continent, which brought many natural products and riches to the European powers.
As evidence that the Colombian Exchange took place we can mention the existence of agricultural products that are not from Europe. Many fruits, vegetables, animals and spices were removed from America and taken to Europe, which created strong food stability in the old continent and provided the creation of strong shopping centers, such as the redwood trade in Portugual.
The Colombian exchange allowed European domination in America, which can be seen today with the existence of European territories in the American continent, such as French Guiana, in South America.