Okay kiddo, you know how we have bosses at school or mommy and daddy have bosses at work? Well, in Spain, there are leaders in each part of the country called "autonomous communities."
One of the leaders in each autonomous community is called the president. They're kind of like the boss for that community. They make important decisions about things like money, laws, and how things are run in that area.
The president is elected by the people who live in the autonomous community, kind of like how we vote for class president at school. The president has to be really smart and know a lot about the community and what's important to the people who live there.
They work with other leaders in Spain to make sure everyone is happy and everything runs smoothly. So, in short, the president of an autonomous community in Spain is the leader who makes important decisions for that area, and they are chosen by the people who live there.