Okay kiddo, let me explain public-sector trade unions in the United States. Do you know what a union is? It's like a group of people who come together to support each other and make sure they all get treated fairly.
Now, let's talk about the public sector. That's the part of the government that provides services to people like schools, hospitals, police departments and more. The people who work in those places are called public employees.
Public-sector trade unions are groups of these public employees who come together to bargain for better pay, benefits, and working conditions from their employers - which is usually the government. The union members elect leaders to negotiate with the government officials to get better contracts, which decide what the employees will get paid and what they're benefits are.
For example, a police officer's union might negotiate for higher pay and better protective gear, while a teacher's union might negotiate for smaller class sizes and more resources for their classrooms.
These unions also work to make sure that public employees get fair treatment if they are ever mistreated by their employers.
So that's public-sector trade unions in the United States! They help government employees make sure they are treated fairly, and they work to get them better pay, benefits and working conditions.