The Algiers Expedition was an event that happened a really, really long time ago - all the way back in 1519! It was part of a bigger time in history called the Renaissance, which was a time when people were doing a lot of learning and exploring in the world.
During the Algiers Expedition, a group of people called soldiers and sailors went on a big adventure to the city of Algiers, which is in Africa. These soldiers and sailors were working for a big important man called King Charles V. They went on the expedition to fight against a group of people called the Barbary pirates, who were doing not very nice things like stealing from other ships and kidnapping people.
So, the soldiers and sailors got on their big ships and traveled all the way to Algiers. When they got there, they had a big fight with the Barbary pirates. It was really tough and scary, but the soldiers and sailors were brave and determined to win. They fought really hard, and in the end, they were able to defeat the pirates and make Algiers a safer place for people to travel and trade.
Overall, the Algiers Expedition was an important event in history because it helped to prevent bad things from happening like theft and kidnapping. It also showed how important it is to be brave and work together to accomplish big things!