C&S merged with Sovran Bank in 1990 to form C&S/Sovran in hopes of fending off a hostile takeover attempt by NCNB Corporation. Only a year later, however, C&S/Sovran merged with NCNB to form NationsBank, which forms the core of today's Bank of America.
The merging of C&S and Sovran Bank in 1990 was an attempt to prevent a hostile takeover by NCNB Corporation.  This ultimately resulted in the formation of NationsBank, which became the precursor to today's Bank of America.