1. Maize (corn): Maize is a cereal grain that was domesticated in Mexico and Central America. It was a staple food for many Native American cultures and quickly became a popular food in Europe after its introduction.
2. Potatoes: Potatoes are a root vegetable that was domesticated in the Andes Mountains of South America. They were introduced to Europe by Spanish explorers and quickly became a staple food in many European countries.
3. Tomatoes: Tomatoes are a fruit that was domesticated in Central America. They were introduced to Europe by Spanish explorers and quickly became a popular ingredient in Italian cuisine.
4. Bell peppers: Bell peppers are a fruit that was domesticated in Central America. They were introduced to Europe by Spanish explorers and quickly became a popular ingredient in many European cuisines.
5. Avocados: Avocados are a fruit that was domesticated in Central America. They were introduced to Europe by Spanish explorers and quickly became a popular food in many European countries.
6. Chocolate: Chocolate is a food made from the roasted and ground seeds of the cacao tree. It was domesticated in Central America and was used by Native American cultures as a drink and food. Chocolate was introduced to Europe by Spanish explorers and quickly became a popular luxury food.
7. Pineapples: Pineapples are a fruit that was domesticated in South America. They were introduced to Europe by Spanish explorers and quickly became a popular luxury food.
8. Vanilla: Vanilla is a spice made from the cured beans of the vanilla orchid. It was domesticated in Mexico and was used by Native American cultures as a flavoring. Vanilla was introduced to Europe by Spanish explorers and quickly became a popular flavoring agent.
9. Peanuts: Peanuts are a legume that was domesticated in South America. They were introduced to Europe by Portuguese explorers and quickly became a popular food in many European countries.
10. Cashews: Cashews are a seed that was domesticated in South America. They were introduced to Europe by Portuguese explorers and quickly became a popular food in many European countries.
These are just a few examples of the many foods that were unknown to Europe prior to the Columbian Exchange. The introduction of these foods had a significant impact on the diets and cultures of people around the world.