Complex sentence: The drought left 6,000 people surviving on less than one litre of water per day, exacerbated by failing food crops and the spread of drought-related diseases such as diarrhoea, pink eye and influenza.
Split into simpler sentences: The drought left 6,000 people surviving on less than one litre of water per day. This resulted in the failure to grow food crops and the spread of diseases such as diarrhea, pink eye and influenza.