Who are the United States Marines direct descendants of?

The correct choice highlights the historical lineage of the United States Marine Corps, which traces its roots back to the British Royal Marines. Established in the early 18th century, the British Royal Marines served as naval infantry, and their structure and functions heavily influenced the development of the USMC. When the Continental Congress established the Marine Corps in 1775, it was modeled on the British Royal Marines’ principles of maritime service and adaptability in combat.

This connection underscores the traditions, training, and operational roles that have carried through to the modern Marine Corps, maintaining a legacy of amphibious warfare and expeditionary operations that originated with the British. Understanding this heritage is essential for comprehending the ethos and operational focus of the USMC today.