Complex sentence: Its leaders were accused of fraud in the 1977 elections, in which Arron won a further term, and the discontent was such that a large chunk of the population fled to the Netherlands, joining the already significant Surinamese community there.
Split into simpler sentences: Its leaders were accused of fraud in the 1977 elections, in which Arron won an additional term. A wave of emigrants fled to the Netherlands, joining the already significant Surinamese community there.