Many of Minangkabau people held prominent positions in the Indonesian and Malay nationalist movement. In 1920–1960, the political leadership in Indonesian was replete with Minangkabau people, such as Mohammad Hatta a former Indonesian government prime minister and vice-president, Agus Salim a former Indonesian government minister, Tan Malaka international communist leader and founder of PARI and Murba, Sutan Sjahrir a former Indonesian government prime minister and founder of Socialist Party of Indonesia, Muhammad Natsir a former Indonesian government prime minister and founder of Masyumi, Assaat a former Indonesian president, and Abdul Halim a former Indonesian government prime minister. During the liberal democracy era, Minangkabau politician dominated Indonesian parliament and cabinets. They were diversely affiliated to all of the existing factions, such as Islamist, nationalist, socialist and communist.