Okay kiddo, let's talk about the Brooklyn Bridge and the trolleys that used to run across it. The Brooklyn Bridge is a big bridge that goes over the East River in New York City. It was built a long time ago, and people used to walk or ride horses across it.
But then, they started using trolleys, which are like really big trains that run on tracks. The trolleys could carry lots of people and things like groceries, and they could go back and forth across the bridge all day long.
People liked the trolleys because they were convenient and fast, but there was a problem - the trolley tracks were really noisy! Whenever a trolley went over the tracks, it made a loud banging sound that could be heard all over the bridge.
So, the people who lived near the bridge didn't like the trolleys because of the noise. They complained a lot, and eventually, the city decided to get rid of the trolleys and replace them with buses.
Today, you can still walk or drive across the Brooklyn Bridge, but you won't see any trolleys. They're just a thing of the past, but they're still a pretty interesting part of the bridge's history!