Okay kiddo, let me tell you about a thing called penal transportation. Back in the olden days when people did bad things, they were punished by sending them to faraway places like an island or a colony, away from their home. These places were usually very different from their home and often not as nice. This was called penal transportation.
Let me give you an example. Imagine you live in England 200 years ago, and you steal a piece of candy from a store. That's not a very nice thing to do, is it? So the judge might decide to send you to a very faraway place like Australia, which is a huge island that was used as a British colony for a long time. You would have to leave your family and friends behind, because they can't come with you. You might also have to work really hard to help build the colony, like building houses or farming the land, which can be tough work.
People were sent away like this because the judges thought it was a good way to punish them and make them learn their lesson. Penal transportation was used for a long time, but it stopped being used about a hundred years ago because people started thinking it was too cruel.
So, that's what penal transportation is, sending someone far, far away to another place to be punished for their bad deeds, like stealing a piece of candy.