The Spanish Inquisition was like a big investigation where people were asked to tell the truth about their beliefs and religious practices. It started in Spain in the late 1400s, when some people were afraid that Jewish and Muslim people who had converted to Christianity were still secretly practicing their old religions.
The leaders of the Spanish Inquisition wanted to make sure that everyone in Spain was a true Christian, so they would ask people questions about their faith and force them to confess if they were practicing any other religion. They would even use torture to make people confess!
Many people were accused of not being true Christians, and they were punished in different ways. Some were forced to wear special clothing to show that they had been accused of something, and others were thrown in jail. Some were even burned at the stake, which means they were tied up and set on fire!
The Spanish Inquisition lasted for a long time, and it was a very scary time for anyone who was suspected of not being a true Christian. Today, we learn about the Spanish Inquisition to remind us that it's important to respect people's beliefs and let them practice their religion without fear of punishment or harm.