As a writing exercise, let me re-write the piece:
"What happened during the Middle Ages is unclear and the evidence we use to understand it is contradictory. Reviews depict the period as one filled with conflict and struggle, but artistic works dated to this period - from the calm, serene looking statues to the expansive, aspirational Gothic architecture - instead hint that they were created by happy people in a flourishing society.
Perhaps the lack of recorded history in this period is the result of peace and a lack of notable incidents rather than war, famine and disease."
The idea is interesting but bite-sized when stripped of the pomp.