Complex sentence: The ethnic make-up of the entire area was traditionally Maasai with pastoralism the main land-use, in more recent years the Chaga and Warusha ethnic groups have increased, leading to an increase in cultivation in the valley which the village occupies.
Split into simpler sentences: The ethnic make-up of the entire area was traditionally Maasai with pastoralism the main land-use. In more recent years the Chaga and Warusha ethnic groups have increased, leading to an increase in cultivation in the valley which the village occupies.