In 1926, a lot of people in the United Kingdom decided to stop working for a while because they were not happy with their jobs. This was called a "general strike."
Most of the people who went on strike were coal miners. They dug up coal underground and it was a hard and dangerous job. They wanted better wages (or more money) and shorter working hours so they could have more time with their families.
The strike lasted for nine days, which is a really long time for people to not be working. During this time, many other workers also stopped working to support the coal miners. This included people who worked on trains or in factories. So there were a lot of people who were not doing their jobs.
The government did not like this and tried to stop the strike. They wanted people to go back to work and did things like hiring people to do the striking workers' jobs, but this didn't work very well.
Eventually, the strike ended and the workers didn't really get what they wanted. The coal miners' wages stayed the same and their hours stayed long. So the workers felt like they lost the strike.
Even though they lost, the strike made a big impact on the history of the United Kingdom. It showed that workers could come together and fight for what they believed in, even if it was risky. And it made people pay more attention to the needs of workers.