In the last 100 years ,electronic communication has been developed.
Telegraph ,Radio , Telephone , Television , internet , mobile phones That has allowed us to have vastly more information about the world around us. That alone has made an immense difference.
100 years ago electricity generation and distribution was still new, most places still had no electrical supply . That meant only candles or oil lamps ( Gas mains were even rarer than electricity mains) for illumination. The entire world, inculding inside homes, really was dark at night, so dark that there was nothing we could do at night apart from sleep. Human activity was restricted to the daylight hours. Only electricity has allowed us to become a 24 hour society.
Just 200 or so years ago there was no land transport apart from horses/ donkeys and other animals and no sea transport apart from sailing ships. Very few people had been far from the place where they were born. In fact most people were born, lived their entire life and died within 30 miles of their birth place.
Those are the things that have advanced in the last 100 / 200 years not human intelligence.