Why was the cumberland road an important achievement of the american system?

Summary: The Cumberland Road, also called National Road, stretched along 600 miles and was the first federal highway in the United States of America and originally served as the main route to the Northwest Territory. The Cumberland Road was built between 1811-1837 and served as a gateway to the West for thousands of settlers  Cumberland Road History - The Northwest Territory The Territory of the United States Northwest of the River Ohio (the Old Northwest or the Northwest Territory) covered more than 260,000 square miles and consisted of the modern states of Ohio, Indiana, Illinois, Michigan, and Wisconsin, as well as northeastern Minnesota. James Madison was the 4th American President who served in office from March 4, 1809 to March 4, 1817. One of the significant events during his presidency was theConstruction of Cumberland Road that began in Maryland in 1811. Hope this helps i tryed to go into as much detiil as i could idk if this helps but im only in midle school

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.