What Bank did Chase merge with?

Could you please elaborate on the history behind the merger between Chase Bank and the institution it merged with? Specifically, what was the name of the bank that Chase Bank merged with, and what were the key factors that led to this merger? Was it a strategic decision aimed at expanding Chase's operations, or was it a response to changing market conditions? Furthermore, how did this merger impact the customers and employees of both banks, and what were the long-term consequences of this union?