How did the construction of canals and railroads affect the national economy during the 19th century?

Canals bridge and railroads makes great affect in economy.

Explanation:

In the 19th century, rail lines were vital to economic development. They not only made it easier to export manufacturing and livestock goods around the world cheaply and easily, but they also aided the growth of other industries. Because of lower freight rates, modern modes of transportation improved the economy by lowering the cost of transporting goods around the world.

answer: 25.8 years old or 25 years old