Complex sentence: Eaton suggests further research is needed to put these 1811 German Coast events into the context of the ambivalent loyalties of the planters, since several planters on the German Coast were themselves ongoing pensioners of the Spanish government at that time.
Split into simpler sentences: Eaton suggests further research to put these 1811 German Coast events into the context of the ambivalent loyalties of the planters. Several planters on the German Coast were still pensioners of the Spanish government at that time.