The term "American locomotive" refers to steam, diesel, or electric trains designed and built in the United States. These locomotives played a crucial role in the expansion of the American railway system, facilitating the movement of goods and people across vast distances. During the 19th and 20th centuries, various manufacturers, such as Baldwin Locomotive Works and General Electric, produced iconic models that became symbols of industrial progress. Today, many historic American locomotives are preserved in museums, showcasing the engineering advancements and cultural significance of rail transport in the United States.