Conversation so far:
What kind of influences from the outside world is the article pertaining to?
British colonial policy makers in 1951 removed all Maasai from the Serengeti National Park and relegate them to areas in and around the Ngorongoro Conservation Area (NCA)
Has being relegated to the Ngorongoro Conservation Area (NCA) been a positive thing for the Maasai people or negative?
The plan for the NCA was to put Maasai interests above all else, but this promise was never met. The spread of HIV was rampant.

Question: What problems are they having?
Self-contained rewrite: What problems are the Maasai people having after being relgated to the NCA?