Complex sentence: The city and most of Macedonia were captured by Latins after the Fourth Crusade, and became part of the Kingdom of Thessalonica, which survived until 1224, when it was captured by Epirus.
Split into simpler sentences: The city and most of Macedonia were captured by Latins after the Fourth Crusade, and became part of the Kingdom of Thessalonica. It survived until 1224, when it was captured by Epirus.