One branch of its history stretches back to Bank of Italy, founded by Amadeo Pietro Giannini in 1904, which provided Italian immigrants who faced service discrimination various banking options.[2] Originally headquartered in San Francisco, California, Giannini acquired Banca d'America e d'Italia (Bank of America and Italy) in 1922. The passage of landmark federal banking legislation facilitated a rapid growth in the 1950s, quickly establishing a prominent market share.