Pompey's Pillar (column) in the context of "Roman triumphal column"

During the Roman Empire, the governor of Roman Egypt (praefectus Aegypti) was a prefect who administered the Roman province of Egypt with the delegated authority (imperium) of the emperor.

Egypt was established as a Roman province in consequence of the Battle of Actium, where Cleopatra as the last independent ruler of Egypt and her Roman ally Mark Antony were defeated by Octavian, the adopted heir of the assassinated Roman dictator Julius Caesar. Octavian then rose to supreme power with the title Augustus, ending the era of the Roman Republic and installing himself as princeps, the so-called "leading citizen" of Rome who in fact acted as an autocratic ruler. Although senators continued to serve as governors of most other provinces (the senatorial provinces), especially those annexed under the Republic, the role of Egypt during the civil war with Antony and its strategic and economic importance prompted Augustus to ensure that no rival could secure Aegyptus as an asset. He thus established Egypt as an imperial province, to be governed by a prefect he appointed from men of the equestrian order.

A monolithic column or single-piece column is a large column of which the shaft is made from a single piece of stone instead of in vertical sections. Smaller columns are very often made from single pieces of stone, but are less often described as monolithic, as the term is normally reserved for less common, larger columns made in this way. Choosing to use monolithic columns produces considerable extra difficulties in quarrying and transport, and may be seen as a statement of grandeur and importance in a building.

As an example of this level of choice, Shoghi Effendi cabled Bahá'ís of the world in 1948 about the Shrine of the Báb on December 10, 1948: