Original sentence: Cortés put Moctezuma under house arrest, hoping to rule through him.Tensions increased until, on the night of June 30, 1520 – during a struggle known as "La Noche Triste" – the Aztecs rose up against the Spanish intrusion and managed to capture or drive out the Europeans and their Tlaxcalan allies
Edited sentence: Cortés put Moctezuma under house arrest, because of the Aztec religious rites of human sacrifice.Tensions increased until, on the night of June 30, 1520 – during a struggle known as "La Noche Triste" – the Aztecs rose up against the Spanish visitors and managed to capture or drive out the Europeans and their Tlaxcalan allies