The hamburger is the most popular sandwich in the United States, with over 50 billion hamburgers sold each year.

The word "sandwich" is named after John Montagu, the 4th Earl of Sandwich, who was known for eating meat between two slices of bread while gambling.

The largest sandwich ever made was 4,743 feet long and was created in Milan, Italy in 2016.

The Von Essen Platinum Club Sandwich is the most expensive sandwich in the world, costing $200. It is made with lobster, caviar, and truffles.

The hamburger is the most popular sandwich in the world, with over 50 billion hamburgers sold each year.

White bread is the most common type of bread used for sandwiches, due to its mild flavor and versatility.

Cheddar cheese is the most popular cheese used for sandwiches, due to its sharp flavor and good melting properties.

Ham is the most popular meat used for sandwiches, due to its mild flavor and versatility.

Mayonnaise is the most popular condiment used for sandwiches, due to its creamy texture and mild flavor.

Lettuce is the most popular vegetable used for sandwiches, due to its mild flavor and crisp texture.

The fish and chips sandwich is the most popular sandwich in the United Kingdom, consisting of fried fish and chips served on a bread roll.

The croque monsieur is the most popular sandwich in France, consisting of a ham and cheese sandwich topped with béchamel sauce and grilled.

The panino is the most popular sandwich in Italy, consisting of a bread roll filled with various meats, cheeses, and vegetables.

The bocadillo is the most popular sandwich in Spain, consisting of a bread roll filled with various meats, cheeses, and vegetables.

The strammer max is the most popular sandwich in Germany, consisting of a bread roll filled with ham, cheese, and a fried egg.