Complex sentence: MacRobertson Miller Airlines (MMA) was established in Australia in 1934, by pilot Horrie Miller with the backing of chocolate millionaire Sir Macpherson Robertson who the same year backed the MacRobertson Air Race between Melbourne and London.
Split into simpler sentences: MacRobertson Miller Airlines (MMA) was established in Australia in 1934. It was established by pilot Horrie Miller with the backing of chocolate millionaire Sir Macpherson Robertson who the same year backed the MacRobertson Air Race between Melbourne and London.