The term Tetrarchy (Greek: "leadership of four [people]") describes any form of government where power is divided among four individuals, but in modern usage usually refers to the system instituted by Roman Emperor Diocletian in 293, marking the end of the Crisis of the Third Century and the recovery of the Roman Empire. This Tetrarchy lasted until c.313, when internecine conflict eliminated most of the claimants to power, leaving Constantine in the West and Licinius in the East.

Although the term "tetrarch" was current in antiquity, it was never used of the imperial college under Diocletian. Instead, the term was used to describe independent portions of a kingdom that were ruled under separate leaders. The tetrarchy of Judaea, established after the death of Herod the Great, is the most famous example of the antique tetrarchy. The term was understood in the Latin world as well, where Pliny the Elder glossed it as follows: "each is the equivalent of a kingdom, and also part of one" (regnorum instar singulae et in regna contribuuntur).

Leroy Anderson (June 29, 1908 – May 18, 1975) was an American composer of short, light concert pieces, many of which were introduced by the Boston Pops Orchestra under the direction of Arthur Fiedler. John Williams described him as "one of the great American masters of light orchestral music."

Born in Cambridge, Massachusetts to Swedish parents, Anderson was given his first piano lessons by his mother, who was a church organist. He continued studying piano at the New England Conservatory of Music. In 1925 Anderson entered Harvard University, where he studied theory with Walter Spalding, counterpoint with Edward Ballantine, harmony with George Enescu, composition with Walter Piston and double bass with Gaston Dufresne.^{[citation needed]} He also studied organ with Henry Gideon. He graduated with a Bachelor of Arts degree in 1929 and Master of Arts in 1930.

Anderson continued studying at Harvard, working towards a PhD in German and Scandinavian languages. (Anderson spoke English and Swedish during his youth but he eventually became fluent in Danish, Norwegian, Icelandic, German, French, Italian, and Portuguese.) During this time he was also working as organist and choir director at the East Milton Congregational Church, leading the Harvard University Band, and conducting and arranging for dance bands around Boston. His arranging work came to the attention of Arthur Fiedler in 1936 and Anderson was asked to show Fiedler any original compositions. Anderson's first work was Jazz Pizzicato in 1938. Fiedler suggested that a companion piece be written and thus Anderson wrote Jazz Legato in 1938.

The Crisis is the official magazine of the National Association for the Advancement of Colored People (NAACP), and was founded in 1910 by W. E. B. Du Bois (editor), Oswald Garrison Villard, J. Max Barber, Charles Edward Russell, Kelly Miller, W.S. Braithwaite, M. D. Maclean.

The original title of the journal was The Crisis: A Record of The Darker Races. From 1997 to 2003, it appeared as The New Crisis: The Magazine of Opportunities and Ideas, but the title has since reverted to The Crisis. The title derives from the poem "The Present Crisis" by James Russell Lowell. Published monthly, by 1920 its circulation had reached 100,000 copies. Du Bois proclaimed his intentions in his first editorial:

Predominantly a current-affairs journal, The Crisis also included poems, reviews, and essays on culture and history. Du Bois' initial position as editor was in line with the NAACP's liberal programme of social reform and racial equality, but by the 1930s Du Bois was advocating a form of black separatism. This led to disputes between Du Bois and the NAACP resulting in his resignation as editor in 1934. He was replaced by Roy Wilkins.

The Roman emperor was the ruler of the Roman State during the imperial period (starting at about 27 BC). The Romans had no single term for the office although at any given time, a given title was associated with the emperor. If a man was "proclaimed emperor" this normally meant he was proclaimed augustus, or (for generals) imperator (from which English emperor ultimately derives). Several other titles and offices were regularly accumulated by emperors, such as caesar, princeps senatus, consul and Pontifex Maximus. The power of emperors was generally based on the accumulation of powers from republican offices and the support of the army.

Roman emperors refused to be considered "kings", instead claiming to be leaders of a republic, however nominal. The first emperor, Augustus, resolutely refused recognition as a monarch. Although Augustus could claim that his power was authentically Republican, his successor, Tiberius, could not convincingly make the same claim. Nonetheless, the Republican institutional framework (senate, consuls, magistracies etc.) was preserved until the very end of the Western Empire.

Herod (Hebrew: הוֹרְדוֹס‎, Hordos, Greek: Ἡρῴδης, Hērōdēs), also known as Herod the Great (born 73 or 74 BCE, died 4 BCE in Jericho), was a Roman client king of Judea. His epithet of "the Great" is widely disputed as he is described as "a madman who murdered his own family and a great many rabbis." He is also known for his colossal building projects in Jerusalem and elsewhere, including his expansion of the Second Temple in Jerusalem (sometimes referred to as Herod's Temple) and the construction of the port at Caesarea Maritima. Important details of his biography are gleaned from the works of the 1st century CE Roman-Jewish historian Josephus Flavius.

The Romans made Herod's son Herod Archelaus ethnarch of Judea, Samaria, and Idumea (biblical Edom) from 4 BCE to 6 CE, referred to as the tetrarchy of Judea. Archelaus was judged incompetent by the Roman emperor Augustus who then combined Samaria, Judea proper and Idumea into Iudaea province under rule of a prefect until 41. Herod's other son Herod Antipas was tetrarch of Galilee from 4 BCE – 39 CE.