Department of the Gulf north. On November 3, 1863, the northern boundary was extended to latitude 33° north. On July 25, 1863, the department/district was transferred to the Department of Mississippi and Eastern Louisiana. It remained in that department only until January 28, 1864, when it was transferred to the Department of Alabama and Eastern Mississippi. Upon being transferred, the department/district boundaries were redefined as beginning at the mouth of the Pearl River, running north to latitude 32° north, east to the Georgia State line and south to the Gulf of Mexico. On May 8, 1864, the boundary was again modified to define the
Name of Mexico triumphantly with his Army of the Three Guarantees (religion, independence, and unity). This was followed by the birth of the short-lived First Mexican Empire that used the "Mexico" name according to the convention used previously by Roman Empire () and the Holy Roman Empire, whereby the capital gives rise to the name of the Empire. This was the first recorded use of "Mexico" as a country title. After the Empire fell and the Republic was established in 1824, a Federation name form was adopted; which was, at most times, more "de jure" than "de facto". The Mexican name stuck, leading