Final answer:
The previous name of ZBT chapter Rho was Phi Epsilon before it joined the Zeta Beta Tau fraternity and adopted its new name to reflect its affiliation.
Step-by-step explanation:
The previous name of ZBT chapter Rho was the local fraternity Phi Epsilon. Zeta Beta Tau (ZBT) is a fraternity that can be found on college campuses across the United States. When a local fraternity becomes part of a national organization, it often changes its name to reflect its new affiliation; this was the case with Phi Epsilon, which upon joining ZBT, adopted the chapter name Rho.
ZBT chapters, such as the Rho chapter, are a part of Greek life and have their own unique histories and traditions. The change to ZBT represents a significant point in the chapter's history, indicating its transition into a larger national network and adoption of the wider fraternity's values and structure.