Complex sentence: They retained strong ties back to their homeland and often to German military and intelligence networks in Haiti, and also served as the principal financiers of the nation's innumerable revolutions, floating loans at high interest rates to competing political factions.
Split into simpler sentences: They retained strong ties to their homeland and often to German military and intelligence networks in Haiti. Germans also served as the principal financiers of the nation's numerous revolutions, floating loans at high interest rates to competing political factions.