"Iron Roads" refers to the network of railways constructed primarily from iron and steel, which revolutionized transportation in the 19th century. These railroads enabled the efficient movement of goods and people across vast distances, significantly contributing to industrial growth and economic development. The term also highlights the importance of locomotives and railcars, which were designed to run on these tracks. The expansion of iron roads played a crucial role in connecting cities and rural areas, fostering trade and cultural exchange, and shaping modern transportation systems worldwide.