Complex sentence: She was introduced in the 1970s to show that women can run for mayor too; by contrast, the Neighborhood of Make-Believe is a monarchy, the throne of which is inherited by male-preference primogenture.
Split into simpler sentences: She was introduced in the 1970s to show that women can run for mayor too. By contrast, the Neighborhood of Make-Believe is a monarchy, the throne of which is inherited by male-preference primogenture.