Who was responsible for adopting the Eagle, Globe, and Anchor emblem?

The Eagle, Globe, and Anchor emblem, which is a central part of the Marine Corps identity, was adopted in 1868 under the leadership of Brigadier General Jacob Zealin. He was the Commandant of the Marine Corps at the time and played a significant role in defining the symbols that represent the Marine Corps. The emblem reflects the Marines' commitment to their country (the globe), their service as an expeditionary force (the eagle), and their naval heritage (the anchor). This emblem has become a lasting symbol associated with the ethos and values of the United States Marine Corps, embodying the pride and history of the service.

While other individuals mentioned in the choices have made significant contributions to the Marine Corps, none were directly involved in the adoption of this emblem. General John Lejeune is known for his leadership and influence in developing Marine Corps traditions and policies; Colonel Theodore Roosevelt is famous for his later exploits and as a former Assistant Secretary of the Navy, but neither were responsible for the emblem. General James Mattis, also a prominent leader in Marine Corps history, had no role in the emblem's adoption.