The Larousse Gastronomique, the French culinary reference book, states that in America, "most salads are based on the Caesar salad."
It also gives our traditional Thanksgiving Day feast as "turkey stuffed with corn bread and served with cranberries and orange sauce."
Some of the foods native to the Americas and used by the Aztecs at the time of the Spanish arrival were chocolate, vanilla, corn, chilies (peppers), peanuts, tomatoes, avocados, squash, beans, potatoes, sweet potatoes, pineapple and papaya. The influence of these foods on world cuisine is staggering. Just eliminate all of them from almost any cuisine in the world to imagine the effect.