While Dekker started his own newspaper (1911) and political party named the Indische Party (1912), Zaalberg founded the Indo alliance named the Indo Europeesch Verbond in 1918 and became a member of the Volksraad.
Dekker mendirikan surat kabarnya sendiri (1911) dan partai politik Indische Partij (1912), sementara Zaalberg mendirikan aliansi Indo dengan nama Indo Europeesch Verbond (1918) dan menjadi anggota Volksraad.