Simplify the following text for a Grade 10 native English-speaking person.
Original: The next year , he passed his doctorate in Madrid , where he started to become known as a caricaturist , and settled down in Rianxo , joining the political movement Action Galicia ( AcciÃ n Gallega in Spanish ) .
Simplified: He eventually settled down in Rianxo , where he joined the political movement AcciÃ n Gallega ( `` Galician Action '' ) .