Construction lasted from 1817 to 1832 not funded by the Federal government
stretched nearly 400 miles
resulted in growth of cities and trade

all of these are describing

the Erie Canal.

Explanation:

The Erie Canal was built to make transportation easier and faster on Lake Eri. It connects or runs from Buffalo, New York to Albany. It was built to assist in transporting manufactured goods, and raw materials between frontier areas and the seaboard. Resulting in cities in the area growing significantly.

during the hitler era and it caused them to declare war on germany