Commerce Group, through its subsidiaries, provides personal and commercial property/casualty insurance, primarily auto and homeowners insurance. Its flagship Commerce Insurance is among the largest personal auto and homeowners insurers in the state of Massachusetts -- in part because of its affinity marketing programs with AAA clubs, and in part because they are required by law to accept virtually all personal auto insurance business submitted by its agencies. Commerce Insurance also sells commercial auto, earthquake, flood, business, and personal umbrella insurance. Its Commerce West and American Commerce subsidiaries sell auto insurance in 15 western states. Spanish insurer MAPFRE owns Commerce Group.
source:answers.com
