The only authoritative edition of Julius Caesar is the 1623 First Folio, which appears to have used the theater company's official promptbook rather than Shakespeare's manuscript. Some anomalies exist, most notably in Act Four where there is confusion concerning the parts of the minor characters. Also, in writings from 1614 and 1625 Shakespeare's contemporary Ben Jonson makes fun of a line from 3.1 where Caesar says, "Know Caesar doth not wrong but with just cause." The First Folio omits the final four words, yet the fact that Jonson was writing in 1625 appears to indicate that the words may have been used in productions of the play even after the publication of the First Folio. The Oxford edition chose to add the four words back into the play, arguing that the apparent contradiction helps to more fully portray Caesar's characteristic god-like aspirations.Julius Caesar opens in 44 B.C., at a time when Rome ruled territories stretching from as far north as Britain to as far east as Persia. However, Rome's military success had come at a serious cost to the political situation in the home city, which was governed by a senate. Rome's senators became increasingly factionalized causing internal disarray, which allowed the more successful military generals gain power. Furthermore, the state suffered from class divisions, and the plebeians had managed to win the right to elect "tribunes," or representatives, giving them some political power. However, women and most of the plebeian men remained excluded from this franchise. Thus, although the republic showed some signs of democracy, the majority did not participate in the general politics.