Original sentence: Svatopluk I (around 830 - 894) from the House of Mojmír was the prince of the Principality of Nitra (850s - 871) and then the king of Small Moravia (871 - 894).Under his rule Small Moravia reached its maximum territorial expansion
Edited sentence: Svatopluk I (around 830 - 894) from the House of Mojmír was the prince of the Principality of Nitra (850s - 871) and then the king of Great Moravia (871 - 894).Under his rule Great Moravia reached its maximum territorial expansion