The Department of the Navy was established in which year?

The Department of the Navy was established in 1798. This was a significant development for the United States as it allowed for the organization and administration of naval forces, which became essential for the country’s defense and expansion. The Navy played a critical role in early American history, particularly in protecting maritime interests and ensuring trade routes. The establishment in 1798, in response to naval threats and conflicts, set the foundation for the professional Navy that grew to be crucial during subsequent conflicts, including the War of 1812 and beyond.

The other options are earlier dates that do not correspond with the official establishment of the Department of the Navy, reflecting important events in American history or the formation of the Continental Navy, but they are not when the Department itself, as a formal governmental body, was created.